Specification:

Bluetooth version: V5.1

Earplug battery capacity: 50mAh

Charging box battery capacity: 1200mAh

Working hours: 3-5H

Standby time: 280H

Operation mode: touch

Waterproof rating: IPX7

Product color: silver

Certification: CE

Battery voltage: 3.7V

Input voltage: 5V

Transmission distance: ≥10M

Speaker: 20-20khz

Bluetooth operating frequency: 2.402-2.48Ghz

Features:

【Fast & Stable Connection】:Advanced Bluetooth 5.1 technology guarantees faster and more stable connection and transmission. Open the charging case then the true wireless earbuds will turn on and pair automatically. Care-free for pairing problem. 

【Clear & Loud Stereo Sound】: Bluetooth 5.1 wireless headphone with excellent Hi-Fi stereo sound gives you an auditory feast. With built-in microphone you can take calls or redial last call. IPX7 waterproof withstands sweaty exercise in the Gym. 

【Up to 3-5H Playtime】This Bluetooth earphone is equipped with built-in 50mAh battery which can last 10 hours after a single full charge. 1200mAh portable rechargeable case can recharge Bluetooth earbuds about 12 times that boasts outstanding up to 3-5H playtime. 

【Smart LCD Digital Display】 In smart LCD digital screen you can check battery consumption display anytime. Charging case presents its battery from 1%-100%. There are separated left and right headphone power consumption indicator. 5 grids in total, each grid represents 20% power of earphone (Lights off when fully charged).

【Smart Touch Control】User friendly design and easy operation. By tapping the Bluetooth earphones to answer/reject the call, hang up the phone, music play/pause, previous/next track, volume up/down.