Brand SAST Model T50 Quantity 1 piece(s) Color Black Material Plastic Function Handsfree Compatible Cellphone Cellphone with Bluetooth Phonebook Capacity 0 Bluetooth Version 3.0 Transmit Frequency 2.4GHz~2.48GHz ISM Transmt Distance 10 m MIC Effective Distance 10 SNR THD No Frequency Response No Talk Time 10~16 H Standby Time 1000 H Charging Time 3 H Charger Voltage DC 5V 500mA Battery Capacity 1000 mAh Interface/Port Micro USB External Card Max. Support No BQB Certification No Other Features Supports specification: HFP and HSP protocol; Supports multi device pairing: keep 8 paired Bluetooth of cellphone in memory and can be connected to two cellphones at the same time; Built-in DSP with the function of noise suppression and echo cancellation; Coming with 2W speaker and highly sensitive microphone Packing List 1 x Bluetooth speaker 1 x Car charger (Input: DC 12~24V; Output: 5.0V 1000mA) 1 x Sun visor holder 1 x USB cable (52.5cm) 1 x Battery (Model: BL-5B 1000mAh 3.7V) 1 x Chinese user manual