NOTICE: If you purchase Sound Intone B80 Headphones from any sellers on Amazon other than AMAZON.COM or INTONE SHOP,you may buy the imitated products. All Sound Intone products come with 3 months Warranty and it is ONLY available when you purchase your headphones from Sound Intone AUTHORIZED SELLERS. Never fooled by Imitations especially with very cheap price! EDITION: Bluetooth V2.1 +EDR FREQUENCY COVERAGE : 2.402GHZ-2.480GHZ ISM Band TRANSMIT RANGE : ¡Ü15M FREQUENCY RESPONSE : 20HZ-20KHZ STATUS INDICATION : LED indicator PAIRING PRODUCTS : HFP,A2DP,AVRCP Bluetooth protocol of the computer, USB Bluetooth adapter Bluetooth cellphones BATTERY : Lion.2.7V CHARGING TIME : 1-2 hours CHARGING POWER : DC 5V OPERATE HOURS : >=10 hours STANDBY TIME l : >=200 hours PRODUCT SIZE : 17.2¡Á16.8¡Á5 cm
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