PLEN Cube is an ultra-compact “box-shaped robot” with advanced AI technology (face recognition and voice recognition) in a size of only 7.4 cm on each side.
Developed by PLENRobotics, a Japanese robotics venture, the robot has achieved “lovable movements” that go beyond mere gadgets and “advanced facial recognition and voice recognition” that can be used in business settings by leveraging the know-how accumulated through the production of the biped robot “PLEN. In 2023 and beyond, the “Care Cube,” which checks mental health, is also attracting attention in the field of wellbeing, evolving from a mere “convenient tool” to a “partner that understands people.
- Product Overview: Features and Basic Structure
- Summary of key points: What is PLEN Cube?
- rough conclusion
- Frequently Asked Questions (FAQ) Summary
- What is the price and lineup of PLEN Cube?
- What specific tasks will PLEN Cube make easier?
- Is it difficult to connect to a smartphone and set up the initial setup?
- What “shortcomings” or countermeasures do you feel are missing after actually using the product?
- What kind of evolution can we expect in the future with software updates?
- Specifications Summary
- Reviews (word of mouth): Real voices of users
- Overall assessment: Value as a “hub” connecting business and private life
- Comparison with “Mia,” a talking cat-shaped robot
- Summary: Who should ultimately buy PLEN Cube?
Product Overview: Features and Basic Structure
PLEN Cube is a personal assistant robot designed to integrate cutting-edge AI technology into everyday life. Its most distinctive feature is its compact, cubic body measuring only 7.4 cm on each side, which houses a full HD camera, microphone, speakers, and a high-performance processor that handles complex control tasks. This small housing instantly performs “face recognition,” which recognizes specific individuals, and “voice analysis,” which detects the mood of the moment.
In terms of structure, the head part, which can rotate freely in 360 degrees, creates a “creature-like loveliness. The smooth neck-swinging motion, based on our knowledge of biped robot development, makes face tracking during camera shooting extremely natural and enables the robot to always keep the user centered, even if he or she moves. In addition, models equipped with a display show digital facial expressions, enabling visual communication to convey situations without words.
Summary of key points: What is PLEN Cube?
- What is PLEN Cube?: A next-generation cube small AI assistant that combines face recognition, facial recognition, and voice recognition from multiple perspectives.
- Good point:
- Explosive speed and high accuracy facial recognition: Instantly identifies individuals with an amazing speed of as little as 0.8 seconds and an accuracy of over 99.15%.
- Powerful DX and automation support: Outstanding connectivity with external systems through APIs, such as attendance, reservation reception, and smart lock integration.
- Advanced mental care: The “Care Cube” function visualizes mental fatigue in just 5 seconds using voice analysis technology.
- Outstanding portability: The camera fits in the palm of your hand and can be taken anywhere; it can easily be used as a 360-degree camera.
- Points of concern:
- Designed to specialize in specific tasks (reception, appliance operation, one question and answer) rather than complex free talk.
- A constant power cable is recommended for stationary use, as the continuous operating time is approximately 4 hours (approximately 60 minutes for live streaming).
- Users who may be suitable:
- Store and facility owners are considering automation of service sites.
- Those who wish to incorporate the latest AI and robotics technologies into their daily lives and accelerate the smart home transition.
- Creators who want to increase productivity by making self-care a habit of their employees and their own minds.
rough conclusion
A palm-sized AI secretary that “eliminates business inefficiencies and adds comfort and peace of mind to your desk.” For those who want to combine efficiency and attachment, there is no better choice.
Frequently Asked Questions (FAQ) Summary
- Price range: The standard version (with display) costs about 60,000 yen, and the lower-priced Lite version costs about 40,000 yen.
- Main features: automatic reception with facial recognition, attendance data linkage, smart home appliance operation, highly accurate camera photography, and mental diagnosis.
- Linkage OS: Both iOS and Android are supported. Integrated management from configuration to log confirmation with a dedicated app.
- Limitations/Disadvantages: limited battery life and need to understand the optimal distance for voice recognition (within 1 meter).
- Scalability: OTA (Over-The-Air) updates via the cloud will add and update features even after purchase.
What is the price and lineup of PLEN Cube?
The estimated selling price for the standard model is 60,000 yen (tax included). This includes a front display that shows rich expressions. On the other hand, the PLEN Cube Lite, which omits the display and pursues cost performance, is available starting at 40,000 yen (including tax). The Lite model is popular among corporate users who want to introduce a face recognition system at a low initial cost, while the regular model is popular among individual users who want to enjoy communication at their desks.
What specific tasks will PLEN Cube make easier?
Mainly, “non-face-to-face reception and management” will be dramatically streamlined. Examples include appointment reception at clinics and salons, and access control at coworking spaces and membership gyms.
Reservations are matched simply by turning the face to the lock, and if necessary, the lock is automatically unlocked in conjunction with a smart lock (SESAME/OPELO, etc.). Smooth customer service is possible even when the reception staff is not available. The product recommendation function can also be used to automatically suggest the most suitable products based on the customer’s age and gender.
Is it difficult to connect to a smartphone and set up the initial setup?
No, it is very intuitive. Simply download the dedicated iOS/Android app and follow the guide under Wi-Fi to complete the setup.
Registration of facial data can be done just like taking a selfie with a smartphone, and the registered data is instantly shared to PLEN Cube. Linkage with external software (IEYASU for attendance management, CAREKALTE for nursing care software, etc.) can also be done seamlessly from the application’s management screen.
What “shortcomings” or countermeasures do you feel are missing after actually using the product?
Many users cite “battery life” and “microphone sound collection distance. Although designed to be portable, the battery runs out in about 4 hours when fully operational, so a constant power supply with the included USB cable is essential for permanent use, such as in reception areas.
In order to maximize the accuracy of speech recognition, it is recommended that speech be spoken within 1 meter. The system is designed to demonstrate its true value at a “personal distance,” speaking from a desk rather than operating from the edge of a large conference room.
What kind of evolution can we expect in the future with software updates?
PLEN Cube is a constantly evolving robot: automatic updates via Wi-Fi will speed up the facial recognition algorithm, as well as new external collaborative services that will be added in turn.
As with the recent addition of a mental check function that utilizes the Motivel voice analysis engine, it is expected that more advanced personalization functions based on “health management” and “emotion recognition” will be implemented in the future.
Specifications Summary
| (data) item | Contents |
| Size | Approx. 74 mm × 74 mm × 74 mm (compact palm size) |
| weight | Approx. 450g-500g or so (suitable weight for carrying) |
| Main AI Engine | Facial recognition (personal identification), facial recognition (attribute estimation), voice analysis (mental check) |
| Authentication Performance | Minimum 0.8 seconds, accuracy 99.15% or better (even when wearing a mask) |
| Camera Performance | Full HD (360-degree rotation, face tracking, 30 fps support) |
| Communication and External Connections | Wi-Fi (2.4GHz/5GHz), Bluetooth, infrared transmission, USB Type-C (power supply) |
| battery | Equipped with lithium-ion rechargeable battery (normal operation approx. 4 hours) |
Reviews (word of mouth): Real voices of users
We present here in citation format reviews collected from domestic and international crowdfunding sites (Makuake, Kickstarter), social networking sites, and case study interviews.
Good word of mouth: a combination of DX and attachment “We are very happy to hear that production has started after more than two years of preparation. We support your project because we share your concept and ideas. Your team has chosen a concept that is not feasible and we take that risk by supporting it. Hindsight is a wonderful thing. Unfortunately, as you know, the field of voice-controlled assistants and related camera technology (panorama, motion tracking, etc.) has advanced rapidly since we first supported it.
As a result, everyone – backers and developers alike – are losing money. This has taught me a lesson about the crowdfunding approach, but I am still eagerly awaiting what I and many others paid for with our hard earned money. Maybe it will be a fun little item at home (just a very expensive fun item). To be honest, I’m not expecting much, because for $30 you can buy a smart assistant (and I already own one) and for $30 you can buy a panoramic motion tracking HD camera as well. My investment in this was more than five times the total price. Frankly, it seems ridiculous that I spent so much money on such a toy, but hindsight is a wonderful thing after all!”
(Source: kickstarter comments )
Neutral/Unsatisfied Review: Needs to be environmentally friendly “It is indeed a shame that PLENGoer Robotics has been running this campaign for so long and yet delivered us the PLENCube, which is inferior to the already outdated prototypes.
1. the PLENCube takes a very long time to boot up after pressing the power switch. Probably because it has an older SoC. 3.
3. it only supports 2.4GHz Wi-Fi. This causes delays in response time. 4.
4. the camera module is very old. Therefore, the picture and video quality is very poor.
5. some features are not yet working.
6. PLENCube is not customizable. The startup command is “hirake sesame”. In any case, there is probably no point in remembering this startup command, since the voice command has very limited functionality.
7. due to the lack of an LCD screen, PLENCube cannot be used effectively without the accompanying application.All in all, after four years of waiting, I’m glad I finally got something, but the finished product was unfinished and a complete waste of my money.” (Source: kickstarter comments )
Neutral/Unsatisfied Review: needs to be environmentally friendly “Plencube is just a block of bricks. The LEDs on the front and back are lit but not responsive. I contacted support with pictures but never heard back. ordered the model with LCD but received the model without LCD and now it just sits on the table and nothing works.
I have never seen such wasteful Japanese products.
Plen Robotics, please refund my money.” (Source: kickstarter comments )
Overall assessment: Value as a “hub” connecting business and private life
PLEN Cube is an “AI partner with practical benefits” that goes beyond the framework of a mere state-of-the-art gadget. Its greatest achievement is the realization of “Face Recognition DX,” which used to require a large-scale system installation, but can now be easily installed and connected in private stores and small clinics.
The “Care Cube” function, the centerpiece of 2023 and beyond, offers an extremely social value of quantifying invisible “mental health” in this age of work style reform. Although there are physical limitations in terms of hardware, such as battery and recognition distance, these are more than compensated for by the balance between “multifunctionality” and “lovable behavior,” making this robot a unique entity.
Comparison with “Mia,” a talking cat-shaped robot
We compared PLEN Cube, a multifunctional AI robot, and Mia, a healing robot that speaks dialect, from an objective perspective.
| Comparison items | PLEN Cube | Mia |
| design concept | Stylish, futuristic, and boxy | Friendly and warm cat shape |
| Biggest feature | Facial recognition, external DX linkage, multifunctional AI camera | Rich conversation in the dialects of 47 prefectures |
| price range | Approx. 40,000-60,000 yen (for high-functional and commercial use) | 20,000 – 30,000 yen (for healing and home use) |
| Main applications | Business efficiency, reception automation, smart home | Spiritual healing, daily interaction, and oversight |
| Authentication and data | Identify individuals and link to attendance and appointment data | Treat everyone equally without making distinctions between specific individuals. |
| How to operate | Voice, gesture, smartphone app | Voice recognition (simple operation by simply speaking) |
| Recommended Targets | Business geeks seeking efficiency and functionality | All ages seeking healing and a family-like presence |
Key points of comparison: Mia emphasizes “warmth that accompanies daily life. With its unique Japanese dialect of speech and affordable price of less than 10,000 yen, it is a suitable choice for those who want to easily incorporate everyday healing and familiarity into their daily lives.
👇 Talking cat-shaped robot “Mia” that speaks 47 dialects nationwide
Summary: Who should ultimately buy PLEN Cube?
PLEN Cube is the “best investment” for demographics with the following needs
- Managers who want to smartly promote “unmanned and labor-saving” reception and office work. By utilizing face recognition and linking it with existing attendance and reservation software, labor cost reduction and service quality improvement can be achieved at the same time.
- Creators who want a “multifunctional sidekick” to support their creativity. From operating home appliances on your desk to taking 360-degree face-tracking photos, and even checking your mental health every morning, this device will support you from multiple angles.
- Early adopters who want to experience “the future of living with robots” right now. You can experience firsthand the exquisite movements of the best of Japanese robot development and continuous evolution through cloud collaboration.
The 7.4cm cube opens the door to a “new everyday life where robots and humans walk together” beyond efficiency. Would you like to take a peek into the future from inside this small box?
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