Round smartwatch with Bosch gas sensor and open-source software launches 2027
The Bangle.js 2 from 2021 is finally getting a successor with a much more modern look. The team behind the open-source smartwatch has published images and extensive details about the Bangle.js 3's specifications ahead of its expected launch in summer 2027, although pricing details have yet to be announced.
The predecessor's small, rectangular display is being replaced by a round display with much thinner bezels, using a 1.2-inch LCD with a resolution of 240 x 240 pixels that can display 64 colors. Combined with a metal bezel, this makes the watch look significantly more modern than the Bangle.js 2. The watch features speakers, microphones, a vibration motor and a heart rate sensor.
While more advanced health sensors, a GPS module and an NFC chip are missing, the watch offers a Bosch gas sensor designed to detect certain smells. An LED flashlight is also said to be on board. The roughly 200 mAh battery is charged wirelessly. One distinctive feature of the Bangle.js 3 is that the watch uses an open-source operating system, allowing the community to expand its functionality.
In keeping with this, the case can be easily opened with a few screws, while four pins on the case provide both power and data connections for diagnostic and programming purposes. With an ARM Cortex M33 (nRF54L15) processor with clock speeds of up to 128 MHz, Bluetooth Low Energy and only 32 MB of memory, the smartwatch is not particularly powerful, but should offer relatively long battery life.
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