NOTICE: If you choose China post air mail free shipping and the order less than $30 ， for the low profit ，the packages all will send by hongkong post without tracking number ，hope you can understand .normally deliver time about 15-30days (brazil need about 30-60days).sometimes need a little long by accident .Please be patience and don\'t worry .If the order less than $30 and you need send with tracking number .please choose hongkong post need $2.11 for the tracking number .Thank you !!!

Bluetooth receiver digital amplifier

Audio input modes: Bluetooth Audio Receiver

Amplifier output power: 2X3W

Driving the speaker impedance: 4-8 ohm

Power Interface: Micro USB socket (USB charging cable connected computer can be powered charging treasure USB 5V)

Output Interface: 2.54 gauge needle seat 4