Description: Name: Wireless Headset Bluetooth-Compatible Version: 5.3 Support Protocol: HSP/HFP/A2DP/AVRCP Charging Interface: Type-C Input Current: DC5V Output Current: 3.7V/40mAh Horn: High Quality Titanium Film Moving Coil Frequency Response Range: 20Hz-20000Hz Headphone Battery: 35mAh * 2 Charging Box Battery Capacity: Polymer 300mAh With Protective Plate Music Playback: About 5 Hours For A Single Play, About 20 Hours With Charging Box Talk Time: 4-5 Hours Charging Time: 60 Minutes Features: 1. Heart Shaped TWS Headset, IPX4 Waterproof 2. Bluetooth-compatible Mode: A2DP, AVRCP, NIYE, HFP, HSP 3. Not Only The Sound Quality Is High, But Also The Voice Arrival Delay Is Low 4. It Can Be Played For About 1.5 Hours After Charging For 10 Minutes, And It Can Be Played Continuously For About 6 Hours After Fully Charged. 5. Equipped With External Sound Capture Function, Even With Headphones, You Can Have A Natural Conversation. 6. Daily Life Waterproof Specification Package Included: 1 Pair * Wireless Headphones 1 * Charging Bin 1 * Data Line