•PU leather earmuffs are comfortable and breathable: The earmuffs are made of soft and skin-friendly materials, which are lightweight, comfortable and breathable, and can be worn for a long time without getting tired •Up to 40 Hours Playtime: With an impressive battery life of up to 40 hours on a single charge, you can enjoy uninterrupted music throughout the day •Advanced Bluetooth5.3 Connectivity: With Bluetooth 5.3 technology, these workout Headphones Bluetooth offer more stable transmission speed, lower latency and better audio output. The Headphones can give you wonderful music enjoyment •Premium Audio Performance: Equipped with high fidelity 40mm dynamic coil unit, these headphones deliver crystal-clear highs, balanced mids, and powerful bass •Button operation, convenient design: Simple button operation design, can be easily controlled Specification: •Bluetooth version: V5.3 •Bluetooth 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 Package included: •1 x Headphone •1 x Audio Cable •1 x Charging Cable •1 x English User Manual