UBOTIE Portable Bluetooth Colorful Computer Keyboards, Wireless Mini Compact Retro Typewriter Flexible 84Keys Design Keyboard

1. Bluetooth Verison: BRCM3. 0 2. Quantity of keys: 84 3. Battery: Extra 2pcs AAA batteries needed 4. Keycaps Material: ABS. 5. Switch Lifetime: 10 millions. 6. Working Time：7days( if 8hs per day7. Standby Time: 1 month. 8. Compatible For： PC( a bluetooth receiver needed, MAC Book, Ipad, Iphones, Laptop, HUAWEI phones, Samsung Pad, etc.