AWEI Neckband headphones V4. 1 Earphones Stereo Headset Sports Earbuds with Mic for iPhone – Red

Bluetooth earphone specifications:
bluetooth version: v4. 1
bluetooth protocol: with a2dp, hsp, hfp, avrcp high quality stereo sound frequency transmission and long-distance control protocol
operation range: up to 10m (barrier-free space)
stand-by time: 500 hours
working hours: 15 hours for talking time, 10 hours for playing muisc
charging time: 2 hours
dmension: 155mm(w)x155mm(l)x19mm(t)
weight: 32g/1. 13oz

drive specifications:
drive: 10mm
sensitivity: 110db ± 3db
impedance: 16ω ± 15%
frequency response: 20-20000hz

package list:
1 * bluetooth neckband earphones
1 * usb charging cable
2 * silicone earmuffs (small/large pair)
1 * user manual

warm tips:
when you connect the bluetooth earphone with your device for the first time, you need press the button about 5-6 seconds, then blue and red lights flashing means it’s ready to pair.
Bluetooth 4. 1 technology: provides a several-second and stable paring with your bluetooth enabled device. Offering you impressive dynamic sound within 30 feet away from your device.
Neckband designed: around-the-neck wearing style with body-contoured fit. Made of ultra-light shape-memory alloy, this earphone is great for easy carrying and all day comfort. Just a great fit especially when you are running, cycling, exercising and home or office.
Ultra long working time: powerful rechargeable battery provides up to 10 hours of continuous play music time/(15 hors of talking time) and 500 hours of standby with a single charge.
Multi-point pairing: supports two connected devices simultaneously and automatically connects after being paired successfully for the first time, these wireless headphones are compatible with most smartphones, iphone and android.
Vibrating call alert: the bluetooth headset can vibrate independently when a phone call comes in and avoid missing incoming calls in case that the earplugs are not in your ears.