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Specification:Brand Name: BluedioModel Number: DF7Bluetooth Version: V4.1+EDRSupport Protocol: HSP\/HFP\/A2DP\/AVRCPDrive Unit: !#!amp!*!Phi;10mmHorn Impedance: 16!#!amp!*!Omega;Flexibility: 110dBEffective Distance: 10mPrequency: 20-20kHzDistortion: !#!amp!*!lt;o.1%Talk Time: 8 HoursMusic Time: 8 HoursStandby Time: 180 HoursCharging Time: About 2 hoursCharging Interface: Micro USBProduct Size: 18*8*55mmPackage Size: 170*179*50mmOptional Color: Black， White.
Features:Connect to two devices at the same time.Smart touch is more convenient.Support to APP and four languages transfer.
Package Included:1 X Bluedio Earphone1 X Ear Hook1 X Earmuff1 X External Earphone1 X Manual