Mouse Included: No Palm Rest: N/A Power Supply: Lithium-ion Rechargeable Battery Distance: 33 feet System Requirement: 1. The device must be built in Bluetooth function; 2. The mobile operating system should be one of the following: Google Android OS, Windows Mobile (6.0 & later) OS, Nokia Symbian S60(V3.0 $& later) OS, Iphone 4.0 OS Features: Bluetooth Version: Bluetooth V2.0 49 keys mini keyboard, QWERTY layout; Micro USB port charging Color LED for working status indication Built in intelligent power manage software for power conservation Charging Time: 3-4 hours