This audio adapter is made of , which can withstand use. Features the ABS and PC material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. Features -Color: Black -Material:ABS, PC -Size: 7.10X2.00X1.10cm/2.79X0.79X0.43in Working time: (receiving) 5h (transmitting) Version: 5.1 range: 10Hz-20kHz SNR: <110dB Battery: 150mAh Range: about 15m - Receiving and transmitting dual uses, freely , fit for different devices. - Built-in microphone, handsfree talking, keeping your eyes on the road while driving, clear talking. - With powerful 5.1 chip, ensure stable and , no disconnection or . - Plug and play, no need to install driver, compatible with most computer operating system. - Special design and it is in fine craftsmanship. It is the best replacement for your old, broken one. Package list: 1 x receiver