Features:
Wireless TV connection, the effective work distance is 20 meters to 30 meters.
Wire connect 3.5mm audio interfaces devices such as CD, DVD, TV, PC, mobile phones, etc.
Built-in high-sensitivity stereo FM, listening to the radio anytime and anywhere.
One transmitter can connect to several B616 headphones at the same time.
NdFeB pronunciation unit and gold-plated pin headphone components offer pristine sound quality.
Rotatable earpiece design, easy to carry.

Specifications:
Model Number: B616
Style: Wireless, 3.5mm, FM Radio
Speaker Size: Φ40mm
Impedance: 32Ω±15%
Frequency Response: 10Hz-20KHz
Sensitivity: 92±3dB at 1KHz

Wireless Headphones:
Voltage: 2.0-3.0V, 2 * AAA (battery not included)
Electric Current: 40mA
Wireless Headphone Receiving Frequency: 109Mhz / 110Mhz
FM Radio Frequency: 87.5-108.0MHZ
Receiving Frequency Response: 20-20KHz
S / N rate: >60dB

Transmitters:
Voltage: 2.0-3.0VDC, 2 * AAA (battery not included)
Electric Current: 40mA
Transmitting Frequency: 109Mhz / 110Mhz
Work Distance in Vast Place: 20M-30M

Color: Black
Headphone Size: Approx. 17.7 * 15.6 * 6.5cm / 6.96 * 6.14 * 2.56in
Headphone Weight: 118g / 4.16oz
Transmitter Size: Approx. 11.6 * 6.8 * 1.5cm / 4.56 * 2.67 * 0.59in
Transmitter Weight: 47g / 1.68oz
Package Size: Approx. 21.6 * 19.1 * 4.5cm / 8.50 * 7.51 * 1.77in
Package Weight: 278g / 9.81oz

Package List:
1 * On Ear Headphone
1 * Transmitter
1 * Audio Cable
1 * User Manual