D-815 Wireless Bluetooth-compatible 5.3 Headphones 40H Playtime Over Ear HiFi Stereo Headset for Smartphone, PC - Black

• Advanced Bluetooth5.3 Connectivity: With Bluetooth-compatible 5.3 technology, these workout Headphones Bluetooth-compatible offer more stable transmission speed, lower latency and better audio output. The Headphones can give you wonderful music enjoyment
• Up to 40 Hours Playtime: With Powerful battery reserve supply, the impressive battery life of up to 40 hours, you can enjoy uninterrupted music throughout the day
• 30 meter stable connection without lag: the contact range can reach up to 30 meters, eliminating the need for wired connections and multiple ways of gaming and calling
• Soft large ear cushions memory sponge: Memory sponge large ear cushions can adapt to the curve of the auricle, not afraid of sound leakage, wearing them for a long time will not feel tired, suitable for listening to music and watching movies for a long time
• Button operation, convenient design: Simple button operation design, can be easily controlled 

Specification: 

• Bluetooth-compatible version: V5.3
• Bluetooth-compatible data stream: HSP, HFP, AVRCP, A2DP, SBC, AAC
• New chip: JELI AC7006F
• Charging time: about 2 hours
• Music playback time: about 40 hours of long battery life (depending on the volume of the song)
• Talk time: approximately 40+hours (depending on volume)
• Sound quality: Dual differential circuit design, high fidelity heavy bass
• Effective and stable connection distance: about 30 meters
• Supports 3.5mm audio input jack
• Support external TF memory card playback
• Support low latency game mode
• Durable, rotatable, metal telescopic pull tab structure
• Battery specification: 3.7V/400mAh with overcharge and over-discharge protection
• Input voltage/current: 5V/1A
• Speaker: diameter 40MM, 32 Ω
• Output power: 22MW
• Microphone: Sensitivity -42dB ± 2
• Charging port: Type-C