Hi, Dear little angel, welcome to Jacenvly, our products are cheap and good quality, price is fair, you can't miss it. If this product is not your style, please click on our store, we have many kinds of products, there will be you like and suits you. If you have any questions about your purchase, please send us the first message, we offer world class customer service to make your purchase without your worries. Have a nice day. 5.3 Wireless Bluetooth Headset, Full-Ear Heavy Bass Plug-In Card, Foldable And Telescopic Plug-In Cable For Communication Features: Product name: Bluetooth headset Item model number: D-816-031 Bluetooth: 5.3 Impedance: 32 Ω±15% Transmision distance: 10 m Frequency: 20 HZ-20 KHZ Operating current: 30mA Sensitivity: 114 + 3 dB or 114 - 3 dB Charging port: Type-C Charging time: 90 minutes Working voltage: 3.7 V-4.2 V Earphone battery capacity: 400 mah Product size: 18.0x19.0x8.8 cm( 6.92x7.48x2.95 inch) Package size: 18.5x14.5x9.3 cm( 7.28x5.71x3.66 inch) Gross weight: 310 g/0.683 lb Product Description: HD lossless subwoofer, push-button control, digital noise reduction for lossless calls, intelligent noise filtering, clear Bluetooth calls. 400mAh large battery, low energy consumption chip, long battery life. Folding retractable design: satchel with, to be traveled with music, high-definition microphone, intelligent active noise cancellation, no matter where, calls are high-definition. Use type-c jack, support fast charging. Skin-friendly-materials, all-ear design, breathable but not stuffy, fit the ear, no feeling to wear, avoid discomfort, can also be used during exercise, immersive breathable earmuffs, comfortable to wear. Fully Android and IOS systems, support a variety of devices. Sports without fear of sweat, daily--and-dustproof. Instructiongs: Because the size of the product is measured manually, there may be errors. Product Includes： 1x Bluetooth Headset 1x Manual 1x Data Cable Features: Product name: Bluetooth headset Item model number: D-816-031 Bluetooth: 5.3 Impedance: 32 Ω±15%