Come and see our amazing products. The F4 In-Ear Bluetooth Wireless Headset uses a high-quality composite diaphragm to effectively reduce noise and allow you to enjoy high-quality music.Comfortable, lightweight, neck wrap design, excellent sound quality.Intelligent magnetic absorption function, IPX4 waterproof magnetic buckle, so that you more convenient to carry.Built-in microphone, using CVC6.0 noise reduction technology, experience super clear voice call.The 130mAh battery lasts 12 hours of music.Sweat-resistant, ergonomic in-ear plugs that fit the contours of your ears.Frequency response: 20Hz-20KHz, Bluetooth 5.0, more quickly match your phone.Smart devices like tablets.Create your own logo on it, create more powerful promotional products, is a great raffle gift, gift, promotional goods. Pls confirm further with us if any query about packing info, inventory status and time schedule.