Features:
It can change the wired to wireless and normal speaker to wireless bluetooth speaker.
It can match cell phone and iPad which have bluetooth, then achieve wireless speaker.
It can transform the music in the audio equipment to wireless playing music.
Large compatibility: it can match cell phone and computer with bluetooth and also.
Color: black
Size: 5.5cm x 2cm x 1cm - 2.17inch x 0.79inch x 0.39inch.

Specification:
Model:H-163 
Bluetooth Standard: Bluetooth V2.0 EDR, support A2DP V1.2.
Power supply: 5V USB.
Output: 3.5mm Audio interface.
Distance: 5-10 meters.
Sound output rate: 44.1KHZ and 48KHZ.

Instructions for use:
Insert the receive the speaker into usb interface, and the other end connected through the 3.5mm audio cable to the receiver and the LINE-IN interface of speakers.
Open the Bluetooth-enabled mobile phone (or computer), and search the surrounding Bluetooth devices to find a device called dmzmusic and then its' pairing code is 0000, after the pairing is successful, the led light will slow down.
Then you can select the music via Bluetooth from a cell phone or computer, a great music will play from speaker.

Package Included:
1 x USB Bluetooth Audio Music Receiver
1 x 3.5mm Audio Cable
1 x user manual