1 1 Headphones Built-in stereo microphone for business Description: 1 headphones: technology 1, ergonomic design, lightweight, not easy to strain the ears, provide maximum comfort during long-term wear. 180 rotation, support the wearing of left and right ear. 1 5.2: Provides fast and stable pairing, long-range connection up to 15m. Long standby time: Built-in 300mAh high capacity battery, digital LED display, allows na to quickly check the battery level. Charging time 2 hours, talk time 25 hours, 60 hours, standby time 60 days. Noise reduction: Built-in, blocks out disturbing ambient sounds such as wind, traffic, or crowds, allowing you to listen to music and phone calls anywhere. Multifunction control: The headset is equipped with a button to play music, previous/next track, /- volume, receive/finish/reject/re-dial calls, support voice assistant and call reminder function. IPX 5 waterproof, suitable for business, office, driving, sports, etc. Specification: Product Size: 6,2x5,4x1,3 cm/2,44x2,13x0,51 inch material: 1 version: V5.2 Speaker: 1 speaker Battery Capacity: 300mAh Charging: 5 V Standby time: 60 days Talk time: 60 hours Listening time: Charging time: 2 hours 1 distance: Frequency: 20Hz-20KHz Impedance: 32 ohms Sensitivity: 85dB/ Waterproof Class: IPX 5 The package includes: 1 piece 1 headset 1 piece charging cable 1 piece instruction