F3 Bone Conduction Bluetooth-compatible 5.2 Earphones Outdoor Wireless Sports Business Headphones Hands-free Hanging Ear Headset black

--open design: Open wireless earphones surround directional sound field, surround directional sound field speakers use physical ecological membrane technology, compact body

--comfortable to wear, no ear clips required, protect ears from damage

--The headset is only 18g, light and portable

--Bluetooth-compatible 5.2 chip, lower power consumption, 180mah battery, longer battery life

--IPX5 battery life, sweat-absorbing and waterproof

Description:
Name: Bluetooth-compatible Earphones
Product model: F3;
Battery capacity: 180mah;
Bluetooth-compatible version: 5.2+EDR;
Bluetooth-compatible distance: 10M;
Standby time: 10 days;
Product color: black, white;
Frequency range: 20HZ-20KHZ;
Playing time: 8H-10H;
Maximum charging voltage: 5V 1A;
Charging time: 2H;
Headphone weight: 18g;
Function: call function/support music;
Packing list:
1 x Bluetooth-compatible Earphones
1 x charging line
1 x manual
1 x packing box
Note:
Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. 
Manual measuring,please allow 1~3mm error,thank you.