Annadue Wireless Touch Keyboard - Wireless

How to use: 1. Connect the USB receiver to the USB port of the device 2. Assemble 2 AAA batteries, put the power button on the ON side 3. Once the red light is on for 2 seconds, the keyboard can be used normally Specification: Item type: wireless keyboard Material: ABS Working distance: up to 10m Modulation system: GFSK Operating voltage: 1.8-3.0 V. Keyboard operating current: 5mA Backup current: 0.3-1.5mA Standby current: <0.2mA Key force: 60±10g. Button life: 3 million times. Operating temperature: -10±55℃ Battery specifications: 2 AAA batteries (not included) Package list: 1 x Wireless Keyboard 1 x USB receiver 1 x user manual (English language not