The wireless stereo headset is a great product for an active lifestyle. You can listen to the powerful bass and high quality stereo sound while running or playing sports, or relaxing at home or in the office. Easy to operate, you can play, skip and pause music, control volume and pick up calls all from the device. The wireless headphones pause the music automatically when a call comes in and resumes automatically when you hang up. You won-'t find a more convenient and comfortable pair of headphones!*Unique neck-strap design for maximum portability *Ultra-light weight for all day comfort *Vibration alert for calls *Magnetized earbuds for easy storage *Noise reduction & echo cancellation Version - Wireless 4.0Battery - Battery 3.7V 180mAhStandby Time - Up to 300 HoursTalk Time - Up to 7 HoursMusic Play Time - Up to 6 HoursCharging Time - ＜2.0 HoursOperation Temperature - -10℃-60℃Colors - white, black, blue, yellow, purple, red, green, hot pink (Optional)Size - 16.8 x 1.8 x 13.5cm/6.6''x0.7''x5.3'' (L×W×H)Weight - 176.9g/0.39lbsPackage Size - 16.2 x 2.2 x 19.5cm/6.38''x0.87x7.68'' (L×W×H)Package Weight - 222.9g/0.49lbs1 x Wireless Sports Stereo Headset1 x Charging Cable1 x User Manual4 x Silicone Earcap