Feature: Headphones are automatically paired, support left ear and right ear interconnection, left channel right channel independent call Single can also be used as a stereo Bluetooth headset Wireless call, wireless music playback Left and right ear control pauses playback, next switch IPX5 waterproof function Special and intelligent design: Rotate the case to open the phone automatically, close the case and automatically close the connection and start charging Specification: Outer Material: ABS Bluetooth: 5.0EDR Call time: 4 hours Music time: 4 hours Standby time: 220 hours Earphone Battery Capacity : 3.7V/40 mAh Single Earphone Charging Time : 1-1.5 hours Box Battery Capacity : 3.7V/500 mAh Box Charging Time : 2 hours Channel: Stereo Bluetooth transmission distance: 15 meters Earphone Size: 23.5 x 20 x 22mm Charging Box Size: 68 x 33 x 27mm Style:In-Ear Communication:Wireless Function:Common Headphone , For Mobile Phone Plug Type:Wireless Connectors:None Wireless Type:Bluetooth Vocalism Principle:Other Waterproof:No Support Memory Card:No Support APP:No Is wireless:Yes With Microphone:Yes Control Button:Yes Volume Control:Yes Active Noise-Cancellation:Yes Package List: 2 x Earphones 1 x Charging Box 1 x Micro-USB Charging Cable 4 x Earbuds