Maxbo New Bluetooth Headphones V4.1 CVC 6.0 Wireless Sport dual Stereo In-Ear Noise Cancelling Sweatproof Headset for iPhone7 Android[ Gym / Running / Exercise / Sports / Sweatproof ] With the 120mAh super capacity high-quality lithium polymer electrochemical cell emebedded.The headset can support continuous standby duration of 240 hours,continuous call duration of 6.5 hours,and continuous music playback duration of 6 hours With the bluetooth 4.1+EDR APT-X audio decode technology,offering you perfect stereo sound CVC6.0 noise cancellation technology intelligently filters ambient noise to ensure clearer sound for calls and music playing. Your listening pleasure, comparable to full sized headphones in a convenient lightweight bluetooth headset Unique and novel design appearance.Excellent ergonomic design:best angle can be found to fit your ear shape,refer to the photos with description Infinity multiple connections:one headphone connecting two phones