... pixel low Lux Camera, shooting photos on the sceneKeyboard/Key:with backlight, big key designed, input data accurately even wearing ... Built-in MIC and speaker, can record and play sound, with outer earphone/MIC port Battery: 3.6v 3000mAH/4500mAH Huge ... outside(one charge)Wireless Bluetooth(optional): Built-in Wireless Bluetooth with antenna, Bluetooth 1.2 compatible version.Communication: USB/RS232/ ...