Color: Red - ABS plastic case material - Mini phone receiver style - Bluetooth version: V2.0 compatible with V1.1/1.2 - Frequency: 2.402~2.480GHz - Operation range: 10m - Adjust volume - Alarm every 15 sec if exceeded Bluetooth range - Built-in 300mAh rechargeable lithium battery - Charging voltage: 5V - Charging time: 2h - Talk time: 5.5h - Standby time: 120h - Compatible with Nokia Iphone BlackBerry Samsung etc. - Package includes: - 1 x Bluetooth mini phone - 1 x USB charging cable (52cm length) - 1 x Carrying strap (50cm length) - 1 x Chinese/English user manual