Product Name: Portable 5-inch headlight Bluetooth tripod self timer Material: ABS material aluminum tube pcba button battery polymer battery electroplating LED lamp Support cell phone width size 9cm Maximum length 920mm (including lamp length) The maximum height of tripod opening is 810mm (including the length of lamp and the last pipe shall support the ground) Bluetooth remote control parameters Bluetooth version 4.2 Transmission frequency: 2.4ghz-2.4835ghz Bluetooth transmission distance more than 10 meters Working voltage: 3V Android 4.44 and above IOS Bluetooth version 4.0 Battery model cr1632 Standby time: normal standby time more than 1 year 5-inch headlamp parameters Device battery 1200mha Charging current: DC5V / 900mA Working current 1A Power consumption 4W Service time: 2.5h-5h