Material:plasticCategory:Earphones & Headphones Active Noise-Cancellation:No Volume Control:Yes Control Button:Yes Vocalism Principle:Balanced Armature Wireless Type:bluetooth Communication:WireLess Style:In-ear Certification:CE Origin:Mainland China • Bluetooth 5.0 : Enjoy seamless connectivity and faster data transfer with the latest Bluetooth 5.0 technology. • Wireless Freedom : Say goodbye to tangled wires and enjoy the freedom of wireless connectivity with these headphones. • Volume Control : Adjust the volume of your music or calls with ease using the built-in volume control feature. • In-ear Style : Get a comfortable and secure fit with the in-ear style design that stays in place during any activity. Chip: Jellyfish 6969A2 Bluetooth version: V5.0 Speaker headset: F10 tuning 32 ohms Bin Battery capacity:402030-150 mAh Talking time: 2H Bluetooth pairing:i7mini Charging Port: Micro USB Headset battery capacity:401010-30 mA Transmission distance: 10M Play length:2H instructions: Bluetooth earphone link: When turned on, the red and blue lights flash alternately, and this is the pairing status mode. Turn on the phone's Bluetooth, click Search to search for the corresponding Bluetooth earphone pairing name, click on the pairing name to link Reminder: 1、 Try to keep the direction of wearing headphones and phones on the same side of the body as much as possible 2、 Avoid keeping your phone in your bag. Generally speaking, canvas bags create fewer obstacles, while leather or briefcases create more obstacles 3、 When encountering similar interference situations, the Bluetooth device inside the phone can be removed, the phone can be turned off, restarted, and then paired with the Bluetooth headset again for use. 4、 The biggest thing to note when using Bluetooth earphones is the charging time of the built-in battery. The charging time for new Bluetooth earphones is between 2-3 hours, while for used ones, it is better to charge between 1-2 hours