1、2.4G wireless transmission, the keyboard and mouse share one receiver, stable signal, low latency. 2、Scissor foot design, fast rebound speed, bringing comfortable and quiet typing experience. 3、28 independent keys, compact layout, easy to carry and use. 4、Small size, slim and lightweight, easy to carry and use. 5、Suitable for cashier desk, bank, financial accounting, business office, shopping mall, etc. Features: 2.4G wireless transmission, the keyboard and mouse share one receiver, stable signal, low latency. Scissor foot design, fast rebound speed, bringing comfortable and quiet typing experience. 22 independent keys, compact layout, easy to carry and use. Small size, slim and lightweight, easy to carry and use. Suitable for cashier desk, bank, financial accounting, business office, shopping mall, etc. Specification: Type: Numeric keyboard mouse combo Color: Black Transmission method: 2.4G wireless Working distance: 10m(barrier-free) [Keyboard] Key number: 22 Power supply mode: 2*AAA batteries(not included) Rated voltagr/current: DC 3V/<5mA Supported system: Windows XP/Linux/Mac/Vista/Win7/Win8/Win10 Item size: 12.8 * 8.5 * 7cm /5.04 * 3.35 * 2.76in [Mouse] Key number: 3 DPI: 1200 Key life: 3 million times Power supply mode: 1*AAA battery(not included) Rated voltagr/current: DC 1.5V/<15mA Supported system: Windows XP/Linux/Mac/Vista/Win7/Win8/Win10 Item size: 10.8 * 6 * 2.6cm /4.25 * 2.36 * 1.02in Packing list: 1 * Keyboard 1 * Mouse 1 * USB receiver 1 * User manual 1 * Keyboard 1 * Mouse 1 * USB receiver 1 * User manual