D-913 Bluetooth-compatible 5.3 Headphones 50H Playtime Wireless Foldable Headsets, HiFi Low Delay - Grey

• Advanced Bluetooth5.3 Connectivity: With Bluetooth-compatible 5.3 technology, active connection within 20m, continuous listening to music and making phone calls without interruption, lower latency and better audio output
• Up to 50 Hours Playtime: With 400mAh Powerful battery reserve supply, playtime up to 50 hours, you can enjoy uninterrupted music throughout the day
• 40mm Driver Unit: 40mm large dynamic coil unit, HIFI surround sound, high fidelity 40mm dynamic coil unit
• Lightweight buttons, convenient and effortless: Simply press the button on the right ear to quickly switch on/off, adjust volume, answer calls, switch modes and other functions
• Multifunctional: Supports low latency game mode/music mode switching, supports voice assistant Siri, supports external audio cable for listening to music
• Comfortable to wear for a long time: Durable, foldable, rotating, and scalable New Design, Multi-function adjustment, comfortable to wear with different head circumferences, soft and comfortable to wear for a long time, zero pressure sensation

Specification: 

• Bluetooth-compatible version: V5.3
• Bluetooth-compatible supports data streams: HSP, HFP, AVRCP, A2DP, AAC, SBC.
• Bluetooth-compatible chip solution: JELI JL7026A low-power chip
• Effective and stable connection distance: about 20 meters
• Music playback/call time: approximately 50 hours (60% volume)
• Battery specification: 400mAh A-class battery cell with dual protection
• Charging time: about 2 hours
• Input voltage/current: 5V/1A
• Charging port: Type-C
• Speaker: 40mm, 32 Ω, good sound quality
• Audio output power: 22mW
• Microphone sensitivity: -42dB ± 3
• Charging port: Type-C