Multiple UseMultiple Mode Features allowing both the Wireless Earbuds to be used as a set or just one earbud as per your convenience. Dual Mode Feature allows you to pair both the earbuds and use it simultaneously for a complete surround sound and crystal-clear audio. The Mono Mode allows you to pair with two phones.Bluetooth 5.0Bluetooth 5.0 signal of 20m signal is more stable and lower power consumption.2600mAh Charging BoxThe true wireless headphones with 2600mAh portable magnetic power bank, which can fully charge the earphones for 15 times,120 hours of battery life, standby for one year. You can go for a day without power shortage thus sufficient music joy all through your day activities.Binaural Call This true wireless headphones with HD microphone, it can as mono earbud and stereo earbuds, when the two wireless earbuds connect together, you can hear the phone call with both ears. In-ear guide structure, running will not fall. More convenient to use, the previous generation of headphones can only do one button, MIFO O5 realizes two physical buttons in the small mention, adjust the volume and switch songs, you can operate without using the phone.IPX7 Waterproof This wireless Bluetooth headphones are IPX7 waterproof, you can enjoy the music while you are running, jogging, cycling, riding, driving a car, mountain climbing etc.sports and showering/bathing.