Description: Multi-device keyboard: Unique computer keyboard for easy switching with Bluetooth tablets and smartphones: Turn a single dial to switch between three wireless Bluetooth devices Smartphone/Tablet stand: Built-in stand for your The device maintains an ideal layout with a familiar angle of typing: designed for easy and comfortable typing, including Windows and Mac shortcuts Features: Wireless solution: Broadcom V3.0 Bluetooth profile: HID Working range: about 10M Frequency range: 2402~2480MHz Working temperature: 10 ° C to 40 ° C Dimensions: 252x46.8x28.8mm Weight: 250 grams Power: 7th battery Working voltage: 1.5V Low pressure alarm: ≤1.1V Working current: 2.5mA Working time: 288 hours Multi-device: up to 3 devices can be paired Auto On/Off - Expand / Roll Up Keyboard material: plastic Package: 1X Reel Keyboard 1X Protective Bag 1X 7TH Battery 1X Manual