Bluetooth 5.0 technology: has higher data rate, longer range and higher broadcast capability. It has lower power consumption and more stable than 4.2.True wireless technology: you won't need to tolerate tangled wires anymore.Widely use for sports fitness climb run drive cycling office and so on.Go Free Go Wire-freeSet yourself free from the hassle of tangled cords and Enjoy cutting-edge sound when listening to music or on calls.Great sound quality and low latencyReplay Deep well balanced bass and penetrating treble with barely latency you would never noticed.IPX7 Water-ResistantWith an IPX7 waterproof rating, the headphones can handle sweat or splashes from rain when you’re working out.QUICKSTART GUIDE1. While earbuds are in the charging case, press and hold the charging case power button. The earbuds will power on and pair with each other. Take the earbuds out of their case.2. Turn the phone Bluetooth on and select the FLY-L.3. After a successful pairing, earbuds will automatically pair with each other and phone next time they are used.See the manual for detailed instructions.This Wireless earbuds ear tips are engineered from a super-soft liquid silicone for exceptional in-ear comfort. Eartips are also available in multiple sizes to ensure everyone has a perfect listening experience.Package Included: 1 x Wireless Bluetooth Headphone With Hook 1 x Charging Case 1 x Charger Cable 1 x User Manual 3 Pairs of eartips with 3 different sizes(S,M,L)