Wireless Bluetooth Headphones 5.1,40 Hrs Playtime Wireless Over-Ear Headphones,4 Mics ENC Noise Cancelling for Clear Calls, Lightweight Headset with Deep Bass Comfort fit for Travel Work

【 Hi-Res Audio 】Custom oversized 40 mm dynamic drivers produce Hi-Res sound. bmanl headphones wireless bluetooth reproduce music with extended high frequencies that reach up to 20 kHz for extraordinary clarity and detail. 【 Bluetooth 5.1 & Built-in Microphone 】Bluetooth 5.1 technology wireless headphones can offer more stable transmission speed, lower latency, and better audio output, which give you wonderful music enjoyment. The built-in microphone of our lightweight headphones enables a hands-free to make your chat more convenient and smooth. 【 Up to 40 Hours of Playtime 】bmanl headphones wireless Bluetooth is rechargeable. 400mAh battery, With up to 40 hours of the listening time of our over-ear headphones in Bluetooth mode, you'll always have music to listening and do not need to worry about power shortage problems for long travel. 【 Built for your comfort 】The headphones are designed for long-term comfort. Over-ear headphones offer advanced breathability and a unique ergonomic fit to fit every head shape. The soft leather padded ear cushions are designed to monitor headphones' comfort and noise isolation, against your ears for a better sound experience and immersion in full sound. 【Convenient and Foldable Design 】They are foldable and adjustable, the headband is adjustable and stretchable up to 21cm, allowing you to find the angle you like. Due to their small size and easy to carry, bmanl Bluetooth headphones are the best choice for unisex children, teens, and adults at home, office, school, travel. Loudspeaker: 40mm Impedance: 32 ohms Sensitivity: 118dB Battery capacity: 400mAh/3.7V Nominal power: 20mW Frequency range: 20 Hz~20k Hz Charging port: Type-C