Style:In-Ear Communication:Wireless Connectors:bluetooth &USB Use:MP3/MP4/PC/Mobilephone/all music devices Function:Microphone,Noise Cancelling,Bluetooth NAME:mp3 kids wireless bluetooth headphones for laptop BLUETOOTH VERSION:V4.1, 2.4G CHARGING TIME:1-2 HRS FUNCTION:BLUETOOTH,MICROPHONE,NOISR CANCELLING Certifications:CE/ROHS/FCC OPERATING DISTANCE:UP TO 10M(FREE SPACE) BATTERT CAPACITY:70MAH BATTERY TYPE:RECHARGABLE LI-ION BATTERY FREQUENCY RESPONSE:20HZ-20KHZ Color:Blue, Green, Red, Yellow Show More