Avantree Quartet Multiple Wireless Headphones with One Transmitter, 4 Pack Up to 100pcs, HD Sound No Lag for TV Watching, Outdoor Movie, Silent Disco

The Quartet transmitter base is also compatible with Avantree Audiplex receiver dongles. You can use any headphones that support a 3.5 mm AUX audio connection. The Quartet wireless kit uses 2.4 GHz technology for audio transmission. Connect up to 30m indoors and up to 100m outdoors. Works with your wired speakers.

• 20KHz; Headphone battery life: 20 hours play time; Charge time: 3 hours; Distortion: 0.5%; Signal.
• noise ratio: 85dB; Operating range: Up to 100ft/30m.