AB-K2 Stylish 4-in-1 Bluetooth V3.0 Stereo Speaker w/ Handsfree Call / TF / FM / AUX - Grey + Black
Compatible with all mobile digital devices with bluetooth; supports 32GB max. TF card; communication protocol: HS/HF/A2DP/AVRCP/OPP; with volume + / - play / pause previous / next key; can be charged on any powered USB device; audio format: MP3/WMA/WAV; battery: 500mAh 3.7V; charging: DC 5V 500-1000mA 3~4 hours