Features 1.[Composite Keys] Keyboard has 12 Fn composite keys, the combination keys of Fn+F1~F12, and the commonly used shortcut key functions such as volume, media, mute, and song cutting, which are efficient for office work. 2.[Compatible] Wireless keyboard supports BT mode connection, and is compatible with mobile phones, computers, and tablet devices, for Windows, for IOS, for Android, free matching, one key switching. 3.[USB Charging] Data cable of the BT keyboard is a USB interface, with a built in rechargeable battery, which can be recharged repeatedly, environmentally friendly and durable, with long lasting battery life. 4.[Comfortable Keys] The keys of the keyboard are designed with scissor foot structure, enjoying a comfortable percussion experience, good rebound effect, comfortable hand feeling, and clear and powerful typing. 5.[Ultra Thin Mouse] Mouse is ultra thin and ultra quiet, ergonomically designed, feels comfortable, 4D buttons, three speed adjustable DPI, 800‑1200‑1600, easy to deal with daily office and game moments. Specification Item Type: BT Keyboard + Mouse Material: ABS + Iron Plate Keyboard: Size: Approx. 10inch Data Cable Interface: USB Built in Battery: Lithium Ion Battery Battery Capacity: 180mAh Battery Model: YN803040 Limited Range of Operation: Within 10m/32.8ft Connection Method: BT Mouse: Style: Single BT Battery (Delivery without Receiver) Number of Keys: 4 Keys DPI: 800-1200-1600 Connection Method: BT Use Battery: 1 x AA Battery (Shipped without Battery) Package List 1 x BT Keyboard 1 x USB Data Cable 1 x Mouse (Battery Not Included) 1 x Mouse Chinese, English and Japanese Manual