Color Red Material Aluminum alloy Quantity 1 Piece Shade Of Color Red Bluetooth Handsfree No Bluetooth Version V3.0 Operating Range 10m Channels 1.0 Interface USB 2.0 Microphone No SNR >=85dB Sensitivity 500mv Frequency Response 50Hz~18KHz Impedance 4 ohm Applicable Products Universal Radio Tuner No Supports Card Type MicroSD (TF) Max Extended Capacity 32GB Built-in Battery Capacity 1500 mAh Battery Type 18650 Standby Time 1 month Music Play Time 480min Plug Specifications USB Power Supply 5V1A Packing List 1 x Bluetooth speaker 1 x USB cable (50cm)