GARZAR: Google Nexus 7 Bluetooth Keyboard Case Cover Stand-- Removable Detachable Wireless Bluetooth Keyboard with Retail Packaging (Black) Detachable Bluetooth keyboard for any other bluetooth ready devices uses a 650mAh rechargeable lithium polymer battery that will give you 100 days of standby time and up to 90 hours of continuous use without charging Classic briefcase characterized a dignified and refined design Durable PU leather with secure closure. Easy access to all buttons, controls and ports Automatic Sleep/Wake function, Come with retail package