Technical Specifications

1 MHz RISC 16 Bit MicroController, Active Mode @ 400uA

Ultra Low-Power Consumption at Standby Mode @ 1.3uA, and Off-Mode with RAM Retention @ 0.22uA

Sensors onboard: Optical blood flow; Galvanic Skin response (perspiration), Ambient Temperature, Body Temperature, 3-Axis Accelerometer

First, you begin by taking off the straps. . If you have taken out a watch strap before, it is a similar method

Flip the watch, use the plastic opening tool and slide into end of the strap, then push the spring contacts until the strap just breaks away from its catch

Independent electrodes to possibly modulate AC Signal onto your skin and measure at the receiving end. Possibly measuring impedance (thereby knowing how much you sweat)