Feature●Material: Body: TPE + ABS; Band: TPU●Product Size: Main unit (W x D x H): Approx. 0.7 x 1.8 x 0.4 inches (1.8 x 4.5 x 1.1 cm); Front length (including band): 9.8 inches (25 cm)●Item Weight: 16.8g (including band)●Android / OS compatible device version●Battery: 50mAh Display: 0.96" Resolution: 240*240 Not WaterproofDescription