Feature:1. Reliable Connection: Dive into quick connectivity with neckband headphones, powered by cutting-edge BT 5.4 technology for a stable, fast, and low-latency enhanced listening experience. Our headphones support most BT devices.2. Make Clear Call: The smart noise-canceling algorithm enhances voice pickup, effectively suppresses environmental noise, and makes your voice transfer clearly and loudly when you make a call with the BT neckband earbuds.3. Magnetic Design: Magnetic self-absorbing design can effectively stop the headphones from being lost or wrapped, convenient for storage and movement, and more lasting. Equipped with an extra 2 pairs of soft earplugs.4. Designed for Sports: Our wireless in-ear headphones are IPX5 waterproof, no matter when you are exercising or when it's drizzling, it's a good partner for your outdoors. Enjoy more than 8hs of playing with just 2hs of charging.5. Easy to Control: Enjoy the unbelievable convenience of in-line button control and microphone, allowing an easy process to change songs, adjust volume, and answer/reject phone calls with simplicity and efficiency.Specification:Color: Black, Beige (Optional)BT Version: 5.4Transmission Distance: 10mRated input: 5V-105MACharging time: About 2 hoursUsage time: About 8 hoursBattery Capacity: 105mAhItem Size: 16 * 12 * 1.5cm/6.3 * 4.72 * 0.59inItem Weight: 20g/0.71ozPackage Size: 16.6 * 14 * 2.5cm/6.54 * 5.51 * 0.98inPackage Weight: 66g/2.33ozPackage List:1*Headphones1*Charging Cable2 Pairs of Replacement Ear Caps1*User Manual