Features: 1. Bluetooth 3.0, Uses Two Aaa Alkaline Batteries, Ultra-Thin Design, Main Body Thickness Is Only 6.7mm 2. The Button Cover Is Made Of High-quality Laser Material, With A Thickness Of Only 2.5mm 3. Soft Touch, Quiet Button Sound, 78-Button Design 4. Compatible With for Computer Windows Operating Systems, Such for Windows2000, Nt, Xp, Vista, Etc., No Driving Required. 5. Compatible With for Mac Os Operating System, for Ipad And Mobile Phone Os 4.0 Do Not Need To Install Any Driver And Can Be Used Directly; Compatible With for Windows Mobile Operating System, No Driver Is Required And Can Be Used Directly<br><br>Description: 1. Number Of Keys: 78 Keys 2. Waterproof Function: Does Not Support Waterproofing 3. Applicable Models: General Purpose 4. Connection Method With Computer: Bluetooth 5. Type: Bluetooth Keyboard 6. Battery Model: 2 AAA Batteries (Not Included) Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Material: plastic colour: white+silver<br><br>Package Contents: 1 x Keyboard<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.