Detailed Product Description Basic parametersModel: HBH-610aTechnical Standards: BlueCore2-Audio single chip, less than a matter of seconds to improve the volumeBluetooth Version: Bluetooth v2.0Transmission range: 10 metersMain PerformanceUse Time: Talk Time: 6.5 hours, standby time: 312 hoursCharging time: 2-5 hoursApplicable models: W550c, Z520c, K758c, W800c, K750c, S700c, P910c, K700c, P908, ...