Specifications:
Serve as FM transmitter, turn your car FM frequency to 1080MHz appointed frequency, then you can enjoy music or answer phone calls through your car audio system

Bluetooth version: Bluetooth V4.1 + EDR
Operating range: 10m (Maximum)
Stereo audio profile: A2DP FM Supported: 1080MHz
Audio output: 3.5mm interface
Voltage: DC 5V
Material: ABS
Color: white
Item size: 2.4 * 1.1 * 4.5cm / 0.94 * 0.43 * 1.77in (L * W * H)
Item weight: 7g / 0.27oz
Package size: 12.6 * 9 * 1cm / 4.96 * 3.54 * 0.39in (L * W * H)
Package weight: 16g / 0.6oz

Operation step:
Plug the device into a USB interface to supply power
then connect the speaker's AUX port with the audio cable
then open the Bluetooth-enabled cell phone (or other Bluetooth-enabled audio device), and search the surrounding Bluetooth devices to find a device called EC501
Once the pairing is successful, the indicate light keeps on. Then you can select the music from your cell phone (or other Bluetooth-enabled audio device), music will be played on the speaker

Package list:
1 * Bluetooth music receiver
Note: Package list without user manual

• Bluetooth V4.1 + EDR Technology, Data Transmission Rate Up to 2.1Mbps
• Can Serve as FM Transmitter, Turn Your Car FM Frequency to 1080MHz Appointed Frequency
• Support A2DP, High-fidelity Stereo Sound, No built-in Battery, Longer Service Life
• Support Music Roaming and Hands Free Phone Function, Free to Switch Between Music and Phone Calls
• Paired with Bluetooth Cell Phone, Bluetooth PCs or other Bluetooth-Enabled Audio Device, Easy Wireless Connection

Bluetooth V4.1 + EDR Technology, Data Transmission Rate Up to 2.1MbpsESHOWEE