D-819 Bluetooth-compatible 5.3 Headphone HiFi Stereo 15H Playtime Ear Wireless Headsets Support FM - Black

• Advanced Bluetooth5.3 Connectivity: Compatible with all Bluetooth-enabled devices, these headphones utilize advanced Bluetooth-compatible 5.3 technology for fast pairing and reliable connectivity
• Long lasting battery life, no worry about the battery life: 400mAh high capacity battery, playtime is up to 15 hours, get rid of battery life anxiety
• Three Modes Switch: Wireless, wired, Insert Micro SDcard, three modes switch, can use the headphone without power
• The audio and Scenes are synchronized to easily dominate the game: Quickly press the play key 4 times and switch to low delay game mode.
• Good sound quality that lasts forever: The intersection between music and life is wonderful. Let you pick up your headphones and enjoy beautiful sound quality anytime and anywhere.
• Wide Compatibility: Fully compatible with devices that with BT, such as mobile phones, computers, tablets, and PC

Specification: 

• Bluetooth-compatible version: V5.3+EDR
• Bluetooth-compatible supports data streams: HSP, HFP, AVRCP, A2DP, SDPAAC, SBC.
• Bluetooth-compatible chip solution: JELI AC6955F chip for true stereo sound
• Charging time: about 2 hours
• Music playback time: approximately 15 hours (depending on volume and song)
• Talk time: approximately 15 hours (depending on volume)
• Battery specification: 3.7V/400mAh Class A with dual protection
• Effective and stable connection distance: ≥ 20 meters
• Support external TF card (micro SD card) insertion
• Support FM radio function
• Support game mode - normal mode switching
• Durable and scalable design
• Input voltage/current: 5V/1A
• Speaker: 40mm, 32 Ω
• Audio output power: 22mW
• Microphone: Sensitivity -42dB ± 3
• Charging port: Type-C