Specification: Item Type: Auto Tracking Phone Holder Material: ABS Phone holder battery: 1200mAh lithium battery (built-in battery sent) Resistance: 8 hours standby time, approximately 3.5 hours run time Controllable angle range: left and right (heading): 360° unlimited, manual up and down (tilt) 180° Max width of phone clamp: approx. 11 cm/4.3 inches. Each fill light Battery: 55mAh lithium battery (built-in battery sent) BT remote control battery: 55mAh lithium battery (battery