Item description Bluetooth wireless connection Enjoy the freedom of wireless connectivity with this headset, which Connects to your device via Bluetooth. All day long, perfect for exercising and running. Universal compatibility This headset is compatible with a wide range of devices, including smartphones, tablets and laptops, making it easy to operate It makes it a versatile accessory for any tech user. In-ear design The style of these headphones offers a sleek and stylish look with warranty Secure fit during physical activities. Product parameters Product Name Bluetooth sports headset black color Usage: oblique ear type Line length is about 39Line length is about 39 Connection: Bluetooth version 4.1, effective range up to 10m Universal: HIFI sound quality, charging voltage: 51 wireless stereo TRUE Waterproof grade: IPXS water and sweat resistant Operating range: 2.4 GHz Instructions: Bluetooth Earphone Link: When turned on, the red and blue lights flash alternately, this is the pairing status mode. Turn on the phone's Bluetooth, click Search to search for the corresponding Bluetooth earphone name, click the pairing name to pair through reminder Try to keep the wearing orientation of the headphones - 1 N* and the phones on the same side of the body as much as possible Below 2, avoid keeping your phone in your bag. In general, canvas bags create fewer snags, while leather or leather bags do More obstacles. Below 3, when encountering similar interference situations, the Bluetooth device inside the phone can be removed, the phone can be turned off and restarted and then paired with the Bluetooth headset again for use. in n The biggest thing to note when using Bluetooth headphones is the charging time for the built-in battery. The charging time for new Bluetooth earbuds is between 23-3 hours, for used earbuds, it is better to charge between 1-2 hours