Product Features: 1.270 degrees rotating design, suit for left and right ear. 2.A short distance wireless communication device letting you listen to music and easily receive calls while driving, traveling, or in working at the office. 3.The earphone can receive calls by pressing the key and communicate via a secure HD channel. 4.Control volume or switch tracks with a press of a button 5.signal quality, and guarantees excellent sound quality. 6.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. 7. Quick pairing, Bluetooth 5.1, automatic seconds, IPX5 waterproof, earphones can be used. Product Specifications: Bluetooth version: version 5.1 Bluetooth transmission distance: 15meters. Creative hook design and only 15g weight,stable and comfortable. Support adjust volume and change music. Battery capacity of the headset: 140mAh Noise Reduction: CVC 8.0 Working voltage: 3.7V Charging voltage: DC5VCharging Time: about 1 hours Talking time: about 20 hours Music time: about 20 hours Frequency response: 20 - 22kHz Products include: 1x Business Bluetooth Headset 1x Charging Cable 1x User Manual Notes: The earphones is only one pcs The earphones is only one pcs The earphones is only one pcs ---(It"'"s not TWS earphone, 2 pieces can"'"t be connected with one mobile phone at the same time) ---(We have a variety of version configurations, you can choose to place an order according to your needs, and we will ship according to the model you choose.) About Us: Dear customers,we are professional manufacturer that produce Bluetooth devices like Bluetooth adapters,Bluetooth earphones and Bluetooth speakers.We will test all the products before we send the products out,which make sure that you will receive the perfect products.