E1 Business Headphones Wireless Bluetooth-Compatible Earphone 5.0 Mono Ear High Power Long Standby Hands Free Sports Headset Description: Features: 1.A short distance wireless communication device letting you listen to music and easily receive calls while driving, traveling, or in working at the office. 2.The earphone can receive calls by pressing the key and communicate via a secure HD channel. 3.Control volume or switch tracks with a press of a button! 4.High Fidelity Sound: Intelligent noise reduction,Ensures maximum signal quality, and guarantees excellent sound quality. 5.Compatible with 99% of Bluetooth-enabled devices (such as mobile phones, tablets).up to 20hrs working time 1-2hrs quick charge, 15 meters feet range.used for a long time and the machine is not hot. 6. Quick pairing, Bluetooth 5.0, automatic seconds, IPX5 waterproof, earphones can be used. Specifications: Product model: E1 Headphone: 230MAH Listening to songs and talking: about 20 hours Charging time: about 1.5 hours Bluetooth version: version 5.0 Frequency: 40Hz-20KHz The impedance is: 32 ohms Sensitivity: 85dB/mW Waterproof grade: IPX 5 Product size: 5.5*2*1.5CM Product color: black red black blue white blue rose gold Package Included: 1*earphone 1*charging cable 1* manual 1*hook Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings.