Portable Bluetooth V3.0 Stereo Speaker w/ Microphone / Hands-Free / TF / AUX - White + Black
Supports hands-free function; Supports TF card up to 32GB; Supports AUX function; Bass and Hi-Fi sound performance; Supports protocols: HS / HF / A2DP / AVRCP / OPP; - Volume adjustable last / next song adjustment; Frequency range: 2.4~2.48GHz; Audio formats: MP3 / WMA / WAV; Built-in 3.7V 600mAh battery; - Charging voltage: DC 5V / 500~1000mA; Charging time: 3~4 hours