Fintie 7-Inch Ultrathin (4mm) Wireless Bluetooth Keyboard for Windows Tablet - Microsoft Surface, HP Stream 7, HP Stream 8, Dell Venue 8 Pro, Nuvision 8, Lenovo and Other Windows Devices Compatible with Microsoft Windows RT or Windows 8 tablet such as Microsoft Surface, Dell Venue 8 Pro, Nuvision 8, Lenovo Miix 2 and other devices running Microsoft Windows. Sleek and portable, ultra-slim (less than 1/4 inch). lighter and slimmer than other portable keyboard selling in the market. Real "hard" laptop style keyboard with high end ABS material. A spring mechanism underneath each key ensures a tactile response with every stroke, helping you to type faster and with less error than on a touch screen. Built-in rechargeable lithium battery provides for 100 hours of uninterrupted usage, while auto-sleep feature saves power and ensures you get the most out of every charge. Package includes: Fintie Ultra-Slim Wireless Keyboard, USB cable, instruction manual. Bluetooth Version: Bluetooth V3.0; Working range: 10M; Size: 7.9"L x 4.9"W x 0.2"H (200mm*125mm*6mm)