Product size: 93*30*6mm.Input voltage/current: 5V/1A.Charging type: USB interface charging.Charging time: 3-5 hours.Use time: 6-10 hours.Features: APP controls the LED badge display, you can DIY change the text, pattern, music rhythm, call reminder. Ultra-long life battery, up to 500 cycles or more. Use energy-saving, part-time, long-life LED lamp beads. Charging protection: LED display screen charging shows the charging status of the battery pattern, and it will automatically turn off when fully charged.How to use: wave the switch button up to turn on the power, and turn it down to turn off the power. This product needs to be used together with the APP. It can input text, support multiple languages, come with animation, DIY graffiti, multiple display effects, music rhythm, and multiple devices. Operation, intelligent timing, incoming call flashing.