Features: 1. Independently pairing two mobile phones. 2. Bluetooth 5.0 technology, more stable connection signal, can realize two headphones connected to different mobile phones at the same time. 3. Binaural sweat protection, sports are not worried. 4. Everyday exercise will have a lot of sweat eroding headphones. We use a high-strength anti-sweat barrier to make all kinds of sweat and rain seamless. Let you feel more relaxed and sweaty. 5. Intelligent filtering of environmental noise, sound data is transmitted by the left and right headphones, making the sound stereo clearer. 6. In-ear wear is really not ear-catching, rounded curvature can distract the pressure of the ear, long wear does not hurt. 7. Bluetooth 5.0, binaural call, auto connect, 20m signal, full frequency moving iron, memory pairing, intelligent noise reduction 8. Balanced armature drive unit for a solid bass sound, shocking sound experience dynamic iron headphones are transmitted through a small connecting rod to the center point of a miniature diaphragm to produce a vibrating and audible earphone. Specifications: Condition: 100% brand new Color: Black, white, red, rose gold Bluetooth version: Bluetooth v5.0 Operating range: 20 meters (distance depends on the equipment used in the environment) Battery capacity: 40mah, charging box 500mah Charging time: About 1 hour Call duration: About 3.5 hours Music duration: 4 hours Standby day: 80 hours Function: Binaural call; automatic connection; memory pairing tone adjustment; up and down song switching Headphones: 1.4*2.5*2cm/0.5*0.9*0.7inch Charging box: 4.8*6.4*2.5cm/1.88*2.5*0.9inch Optional color:black,red,pink,white Package included: 1 pair of headphones Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1、1.Independently pairing two mobile phones. 2、2.Bluetooth 5.0 technology, more stable connection signal, can realize two headphones connected to different mobile phones at the same time. 3、3.Binaural sweat protection, sports are not worried. 4、4.Everyday exercise will have a lot of sweat eroding headphones. We use a high-strength anti-sweat barrier to make all kinds of sweat and rain seamless. Let you feel more relaxed and sweaty. 5、5.Intelligent filtering of environmental noise, sound data is transmitted by the left and right headphones, making the sound stereo clearer.