HOCO W67 Wireless Bluetooth Headphones Bluetooth 5.4 Foldable Over Ear Headset With Mic HiFi Music Sport Earphone For All Smartphone Universal

hoco. Speaker unit: 40MM diameter, impedance: 32 ± 15%, sensitivity: 98dB ± 3dB. Frequency response: 20Hz~20000Hz. Bluetooth specifications: Bluetooth V5.4, Zhongke Lanxun AB5656B. Supported protocols: A2DP, AVRCP, HSP, HFP. Transmission range: 10 meters Transmission frequency: 2402-2480MHz. Maximum Radio Frequency Output Power EDR): 4dBm. Modulation type EDR): GFSK, 4-DQPSK. Charging interface: USB-C. Charging voltage: DC 5V, charging time: about 1.5 hours. Talk time: approximately 32 hours, music time: 32 hours 80 volume). Standby time: over 180 hours. Product Material: ABS+Silicone+PU Leather. Charging indicator light: It displays a red light when charging and turns off when fully charged. 300mAH A-level. Polymer Battery. Net weight of product: 197g. Product size: 19619089mm. Open Bluetooth headset design ensures seamless communication between listening to music and external sounds. Zero contact between ears and earmuffs, eliminating the pressure of traditional earmuffs, and wearing