Product detailsV91 Bluetooth Earphone Sports V4.2 Chip Stereo Metal Magnetic Wireless Headphones Headsets Neackbands Handsfree For Samsung, iphone, Xiaomi, etc.Support: ?Cell Phone/ PC/ MP3Functions:Wireless/Telephone/WMA&mp3 PlayMusic Time: 5 HoursColour: ?White Black Red Pink Blue Gray
Bluetooth Earphone with Flexible Neckband & Microphone- Flexible Neckband that can bend to any shape to fit your neck- Stable connection with Bluetooth version 4.2- 6 hours playing music
Bluetooth version: 4.2Operation Distance: 10m;Sensitivity: 105dB? ?5dBFrequency response: 20Hz-20 KHzSpeaker: ?10mmImpedance: 16?Music Playing Time: 6 hoursCharge Time: 2hoursRechargeable lithium battery
Function:1.Bluetooth: wireless connection2.FM function3.Mic function: pick up call with mic.4.TF card:download music into your TF card, so you can enjoy without phone when you are working out.
Use: Easy to operateMulti-place:home/ working place/ Sport/ Study, etc

Bluetooth version: 4.2Operation Distance: 10m;Sensitivity: 105dB? ?5dBFrequency response: 20Hz-20 KHzSpeaker: ?10mmImpedance: 16?Music Playing Time: 6 hoursCharge Time: 2hoursRechargeable lithium battery
Function:1.Bluetooth: wireless connection2.FM function3.Mic function: pick up call with mic.4.TF card:download music into your TF card, so you can enjoy without phone when you are working out.
Use: Easy to operateMulti-place:home/ working place/ Sport/ Study, etc