Awei a897bl air conduction sports headset v5.3 earphone Bluetooth with mic waterproof wireless headphones for hiking running

Specifications:Air-conduction sports earphoneBluetooth : Jieli AC7003Bluetooth version: 5.3(with power amplifier)Battery capacity of charging case: 200mAh (with protective plate and OVP)Play time: 8hTalk time: 7hCharging time: 2.5hStand time: 300hHorn diameter: 10 * 8.5mmInterface: Type-CSize: 13*10.5*5.6mm Feature:Bluetooth version: 5.3 Sound track: stereoSupported protocols: A2DP, HSP, HFP, AVRCPBattery capacity of charging case: 200mAh (with protective plate and OVP)Frequency response range: 100-8KHzSensitivity: 119 ± 2dBImpedance: 30 Ω ± 15%Charging standard: DC5VBluetooth operating frequency: 2.402GHz-2.480GHzMaximum transmission distance: 12mVoice prompt: supported Multi-point connection: unsupportedWearing method: ear hookUser manual: Chinese and EnglishAccessories: USB charging cable, user manual

A897BL Air conduction Bluetooth headset Born for exercise 

sound quality / IPX4 waterproof sweatproof / Only weighs about 20G

[1] 0.038S low delay retreat ：Audio synchronization [2] 10mm diaphragm dynamic coil ：High-fidelity speaker unit[3] Latest Bluetooth V5.3：Extremely clear and smooth[4] Earphones fast charge：2h full charge of 200mAh battery [5] Smart call noise reduction：The call is really clear [6] 8H battery life：Meet all-day needsListen to ambient sound Outdoor sports are safer The non-ear-blocking way allows sports enthusiasts to maintain their perception of the external environment while listening to music.Stereo sound quality Inspire enthusiasmThe quadrilateral structure speaker brings an unexpected -level sound quality experience, with transparent high frequencies, delicate mid-range, and thick low frequencies.IPX4 waterproof Enjoy sweat and rain IPX4 waterproof and dustproof, which can be drizzled/splashed/cleaned Swinging alcohol and sweat recklessly, making exercise more enjoyable8 hours of listening Powerful stand 8 hours of listening experience, easy to cope with various training scenarios, strong stand to meet the needs of various daily scenarios.  
300h Stand time  8h Music playback time 2h Charging time

There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. If you do not understand what you can contact customer service at any time, I wish you a happy shopping.