Bluetooth pairing name: YESIDO MG03  Material: PC+PU Charging current: TYPE-C 5V/2A Product power: 2W 5. Battery capacity: 1200mAh 7.4V 6. Charging time: about 1 hour Usage duration: fully open for about 1.5 hours Timing time: 15min Key functions: - Long press: on/off - Short press: switch gears, vitality mode, relaxation mode, sleep mode loop - Double click: turn on/off built-in music  42-degree constant temperature hot compress, with an error of plus or minus 2 degrees.  Air pressure and hot compress massage can relieve soreness and other effects on the eyes and temples. With built-in sleep music, you can massage your eyes while emptying your mind. Specification : Package Weight : One Package Weight 0.45kgs / 1.00lb One Package 20cm * 12cm * 10cm / 7.87inch * 4.72inch * Size 3.94inch.