This item integrates the Bluetooth audio music receiver and USB EU wall charger、 which can bring you much convenience and fun. And、 it can change the ordinary speaker into the Bluetooth-enabled speaker. With this product、 the ordinary speaker can wirelessly play music of your smart phones、 Tablet PC、 notebook and other Bluetooth-enabled devices、 and you can greatly enjoy music from your wired speaker. What's more、 an extra USB charging port can provide fast charging to your USB enabled devices. Features:Mini portable USB charging Bluetooth Receiver、 compact and portable.Turns ordinary speakers into Bluetooth speakers.Compatible with any high-end speaker with 3.5mm audio interface and RCA input interface.Perfectly suitable for home use、 travelers or businessman use. Extra USB port provides fast charging to your USB enabled devices.The operating range is up to 10m.LED indicator displays status.Built-in protection can prevent short-circuiting、 over-current and over-voltage.Specifications:Model number: TS-BTPWRBluetooth version: Bluetooth V2.1 + EDRSupported Bluetooth profiles: A2DP、 HSP、 HFP、 OPP、 OBEX、 DUNFrequency range: 2.4GHZ-2.4835GHZStereo chip: OVC3860 Audio quality: High acoustic fidelity soundInterface: Standard 3.5mm audio (HiFi surround) output interface and 5V USB interfaceWorking voltage: 3.3~4.2VWorking current: 40mAOperating range: 10 ~15m (Maximum up to 20m at free space)Output impedance: 32ohmh Total harmonic distortion: 0.6% Noise signal ratio: － 60dBInput voltage : 220V-110V Color: BlackMain item size: 7.0 * 6.0 * 4.2cm / 2.76 * 2.36 * 1.65inMain item weight: 53g / 1.87ozPackage size: 8.0 * 6.5 * 4.5cm / 3.15 * 2.56 * 1.77inPackage weight: 72g / 2.55ozPackage list:1 * Bluetooth Audio Receiver with USB EU Wall Charger 1 * 3.5mm Audio Cable1 * (English / Chinese) User Manual