Deep Dive Teardown of the Fire-Boltt King BSW159 Smartwatch
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The Fire-Boltt King is low budget smartwatch with a very simple design. Operation is by touchscreen and only one button. Connectivity is only via Bluetooth, there is no WiFi. The main advantage of this device is the AMOLED display with 448 x 368 resolution, higher than in the Apple watch SE 2022 where the resolution is 324 x x394 pixels. The size of the screen is 1.78-inch in the Fire-Boltt and 1.6 in Apple.
In terms of the microphone technology, the Fire Boltt King uses an electret type while the Apple Watch SE 2022 features a MEMS microphone. When comparing heart rate sensors, the Fire Boltt King uses a single ambient light sensor, while the Apple Watch SE 2022 utilizes a team of LED and photodiodes and dedicated signal processing IC. The straps are different, with the Fire Boltt King having a steel mesh band and the Apple Watch SE 2022 equipped with a rubber band.
