Wireless Bluetooth Smart Cap New Fashion Men Women Unisex Winter Warm Hat Smart Cap Headset Headphone Speaker Mic for iphone 7 8 Feature: 100% brand new and high quality. Quantity:1Set Knitted material, fashion and keep warm with answer the phone in winter Set-in MIC, available for cell phone to transmit the speaking phone to your audio devices directly so that the user can hand free answering Set-in Li-ion chargeable battery, charge via USB Cable, long stand-by time. V3.0+EDR Bluetooth version,available for most of devices with bluetooth function. Specifications: Bluetooth Version: V3.0+EDR Frequency: 2.4026GHz-2.480GHz Transmission distance: 30ft or so Transmission distance of MIC: ≤3 ft Li-ion Battery:3.7V/120mA Charging time:2.5 HRS Standby time:60 Hrs Continuous working time:about 5Hrs Size: Fits for head circumference 56-62cm Speakers can be taken off so that you can wash the hat Material:Knitted Color:Black.Red Package Content: 1PC Warm Bluetooth Smart Hat(without retail package) 1PC Charging Cable Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!