Hand Feel and Cover: Made of health and environmental protection ABS material with polished paint treatment, smooth to the touch.Good for Body Health: Eliminate more than 99% of radiation absorbed from the phone, the use of safer for children and pregnant women.Easy to Operate: Allows access to phone functions when making calls, with the Pick up / Hang up button, Volume button, easy to use .Noise Reduction: High-quality speaker and microphone, noise reduction system, gives you a better call experience.Universal Design: Supplied with a 3.5mm plug, compatible with almost all mobile devices. Turn your tablet into a phone through apps.Item Type: Mini SpeakerColor: White/Purple/Black/Blue/Yellow.Weight: 180g.Product size: 21*6*6.7cmMaterial: ABS.Parameters:Plug: 3.5mm.Frequency range: 20-20000HzSensitivity: 111dB 3%.Impedance: 150 ohmsSpeaker diameter: 38mm.Cable length: about 2 meters.Connection connector: 3.5mm four-prongSounding mode fit: buttonFeatures:--Noise reduction system, improved call comfort.--Allows access to phone functions when making calls.--Eliminates more than 99 % of phone radiation absorbed.--Turn your tablet into a phone via Skype or VOIP apps.--Luxury smooth paint treatment. Compatible with all devices.Package content: 1 cell phone.Please contact us first when you have any problem, we will give you the best service and solve the problem ASAP. Thank you very much.