Computer Accessory Sets features: Logitech K580 Dual Modes Thin and Light Multi-device Wireless Keyboard with Phone Holder (Black) Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. 1. Lightweight design, simple and stylish 2. The compact design makes full use of the space, the full-size design of the numeric keypad can reduce arm movement 3. Contains 15 FN shortcut keys, with high efficiency and comfort 4. Multi-screen switching, efficient office, you can connect mobile phones and tablets, you can switch input between two devices at the same time 5. The keyboard comes with a mobile phone card slot, making multitasking more intuitive and convenient 6. Dual-mode connection, stable and reliable, can be connected via Bluetooth/2.4GHz and USB wireless receiver, stable and reliable wireless connection within 10 meters 7. Receiver: Available USB port, supports Windows 10 or higher, Windows 8, Windows 7 compatible with Surface 8. Battery type: 2 AAA batteries (excluding batteries) 9. Battery life: 24 months 10. Dimensions: 37.4x14.4x2.1cm 11. Weight: about 558g