Highlights : Product color: Dazzling black, ivory white Bluetooth version: Bluetooth 5.0 Frequency range: 2404 mhz~2480 MHz Telephone duration: 7-10 hours Playtime: 5-6 hours Headphone charging: 40 minutes Transmission distance 10m Headphone capacity: 60 mA Support System: ios/Android Support protocol: A2DP/HFP/HSP/AVRCP Bluetooth Audio: HIFI Stereo Audio Description: Easy to carry headphones and not easy to lose . Continuous Charging and Receiving Integration . Charge the headphones anytime, anywhere. The charging box is full and can be used for a week at a time. . Using Bluetooth 5.0 chip, downward compatible with 4.2 and 3.0 protocol functions, compatibility with the old version, stability, and functionality have been .significantly improved. . Introduce a custom Hi drive unit, equipped with a metal cavity and diaphragm, release the shocking sound quality, and bring you to the music hall. . When answering the phone, both ears are synchronized, so you only need to wear earphones. The porridge is easy to cook. In a noisy indoor environment, the auxiliary earphone listens to the main earphone and delivers the message easily. What in the box: Charging Chamber * 1 Ear Cap * 2 Data Line * 2 Manual * 1 Earbuds * 2 SKU: 200221080536