Bluetooth Headphones,Syllable Noise Canceling Premium Sound with Bass and Microphone Sports Wireless Earbuds Earphones Headsets for Running Workout Gym -Black

FEATURES
Sporty idea injected, light in weight and easy to carry
Ergonomical design, comfortable like you are wearing nothing
Two wearing ways at your choice with adjustable headband
Detailed voice instruction guiding your operation
Rubber coating, comfortable to wear
Superb sound quality
Built-in microphone

SPECIFICATION
Bluetooth version: V4.1
Frequency range: 2.4GHz - 2.48GHz
Operating distance: up to 10m (free space)
Standby time: up to 180hrs
Talking/music-playing time: about 4~5 hours
Charging time: about 1~2 hours
Bluetooth profiles: A2DP, AVRCP, HSP, HFP
Frequency response: 20 -22kHz
Operating Temperature:-10??~50??C