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Startup MATRIX industries has thought something out of the box in finding a solution to charging problems in its latest invention PowerWatch, the smartwatch which doesn’t need charging. After having already displayed its prototype the company is gearing up for a July release next year. The speciality the fitness-tracking watch possesses is that it doesn’t run on an electrically powered battery, but harnesses your body heat to keep ticking.

The PowerWatch runs on energy derived from your body heat and is the first such watch ever built. The moment you remove your watch from your wrist it goes into sleep mode but still maintains the time by deriving a small current from a battery fitted inside and saves all your records in the memory. As soon as you put it back on your wrist, it again comes to life right where you had left. This all has been possible because Matrix has put in world’s lowest power consuming processor which has been built by Ambiq Micro.

The final product looks quite stylish as can be seen in the pictures, sporting a 1.2 inch black and white display along with aircraft grade aluminium body. Straps can be chosen among military grade Nylon straps or Black Milanese straps. It is water resistant for upto 50m and therefore is suitable for swimming. Though heat powered it will still be having a 200mAh battery which is charged only when anyextra heat is generated. A power meter keep tracks of your calories burnt and is being claimed to be accurate. The watch face is customizable with different inbuilt themes.

If we talk of the functionalities, it can only perform basic functions like displaying time, counting footsteps, keeping a track of your sleep quality along with calories burnt and support microapplications like timer or a stopwatch. But don’t expect it to monitor heart rate or display notifications much like other smartwatches can. Obviously you can’t expect much from something that works on your body heat, it can’t derive enough power for more smart features like the modern day smartwatches.

The MATRIX PowerWatch syncs with MATRIX iOS and Android app through Bluetooth and shows your records. The PowerWatch also supports Apple Healthkit and Google Fit apps. The smartwatch is priced at $169 USD which is roughly around 11,000 INR and can be preordered at for a discounted price of $129.

Talking of the science involved in it, the watch works on the thermoelectric technology, a technology based on Seeback effect according to which electric current is generated whenever there is a temperature gradient which is in this case the difference between the temperature of the skin and the surrounding air. Though this tech has been there for quite a while but it has been put to a limited use, used in NASA built spacecrafts Voyager and Curiosity, the rover that was sent to mars.

The PowerWatch is still in its finishing stage. Matrix is running an online fund raising campaign on and has been quite successful, raising $600k USD which is $500k  more than its flexible goal of $100k. If you feel you can also help in the evolution of this tech by backing Matrix at

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About Author

Vipul Gupta

Vipul Gupta is currently a first year engineering under graduate at NSIT, Delhi. He is pursuing engineering in the field of electronics. Passionate about technology, he moved to Delhi to proceed fast in an upscale environment. When he isn’t glued to a Computer Screen he likes travelling and exploring the city with friends.He is very innovative in thinking, very creative in execution and expert in decision making.


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