mini bluetooth speaker BS5017

Specifications : Mini Bluetooth speaker Function: TF card, FM radio,Bluetooth hands-free calls, Material: Metal Power supply: USB3.7V/500MAH Output power: 3W, SNR: ≥ 86dB Distortion: ≤ 0.5% Audio input: 3.5mm Frequency: 65Hz-20KHz Size:About 6*5.5cm, Built-in lithium battery, overweight bass, Unique design: volume adjustment ring rotation