Aita BT822 Foldable Wireless Headphones, Bluetooth Over-ear Headset with Mic, Strong Bass Noise Canceling for iPhone 7 7 Plus 6 6 Plus 6s iPad iPod Smartphone etc. For Kids and Adult (Green) Powerful bass resonance: Clear and transparent bass, mids and treble, fully exposed to all the details of song, you can hear what the sounds really want you to hear. Ultra-long operation and carefree calling from Bluetooth 4.0: With robust high speed CPU of Bluetooth 4.0 operating system, comes with ultra-long using of 8 hours music, 10 hours talk time. Acoustic echo cancellation and noise reduction effectively reduce ambient noise while talking. Customized function: Audio Sharing allows you to connect to another headphones via an audio cable, share music feast with your friends instantly. Comfortable wearing: Custom fit supra-aural soft earmuffs, artificial protein leather of earmuffs simulated to human skin texture, ensure long lasting comfort in various rugged circumstances. Convenience: Just a plug with audio cable, then listen to your favorite tracks without using any battery, no matter how long is your playlist.