Color Black Brand LSON Model LB4 Quantity 1 Set Material ABS Screen Size 2.8 inch Function Handsfree Compatible Cellphone IphoneMotorolaBlackberryLGSumsangNokiaSonyEricssonHTC Phonebook Capacity 8 Voice Prompt Yes Voice Prompt Language English Bluetooth Version V3.0 Transmit Frequency 2.4 GHz Transmt Distance 10 cm MIC Effective Distance 3 m FM Frequency Range 88.1~107.9MHz FM Transmit Distance 8 m Frequency Response 40~12000Hz SNR 45dB THD Battery Capacity 650 mAh Charging Voltage DC 12~24V V Talk Time 10 Hour Standby Time 30 Hour Charging Time 4 Hour Interface/Port TF card slot Expansion Card Capacity (Max.) 88.1~107.9MHz Other Features 4GB Packing List 1 x USB car charger 1 x USB cable (150cm) 1 x English user manual