Item No.: ES-305 Bluetooth headset Description ◆ Bluetooth-H1 bluetooth wireless headset ◆ Charger ◆ Carrying case ◆ In struction manual ◆ If you are using a non-Bluetooth mobile phone,you must use our universal adapter D1(Optional).This adapter must be connected to the mobile phone using one of the supplied cords. ◆ Operation range:Up to 10 meters. ◆ Weight:about 20 grams. ◆ Size:L.64譝.55譊.20(mm). ◆ Reversible hook for either ear with smooth material for long hold. ◆ Capacity:Up to 6 hours talk time and 110 hours stand-by time.9 hours in HV3/7:30 hours in HV2/6:00 hours in HV1(HV level set by mobile phone). ◆ Bluetooth specification:compliant bluetooth protocol V1.2.