Product Name: Foldable and Retractable Neckband Wireless Bluetooth Headset Sport Headphone with Microphone Model NO.: DE-HBS992 Jack Diameter: Wireless Function: Multimedia, Bluetooth, Microphone, Noise-Cancelling Usage: Home Theatre, Portable Media Player, Computer, Mobile Phone Communication: Wireless Type: Wireless Earphone Color: Silver, White, Black Wire Material: TPE Bluetooth: 4.1 Bluetooth Chip: Jieli Charging Time: 3-4 Hours Playing Time: 14-16 Hours Frequency Range: 20Hz-20kHz Standby Time: 320 Hours Battery: 400mAh Trademark: AiL Transport Package: Color Box Origin: China HS Code: 8517629400 Product Description Foldable and Retractable Neckband Wireless Bluetooth Headset Sport Headphone with MicrophoneBluetooth versionV4.1Operating RangeUp to 10 metersFrequency response20Hz ~20,000HzHandsfreeBuilt-in MicrophoneUSB ChargingMicro USB PortCharging Time3-4 hoursTalk time/ Music Playtime15-16 hoursStandby time320hoursColorBlack, White, Silver, BlueService provided:1) 12 Months warranty2) Full inspection for mass production3)Logo customized Remark:1:Payment term: Bank transfer, Westernunion, Paypal (for small)2: Lead time:1-4 working days for sample; 7-15 working days for mass.3:Warranty: change new in 12 Months4:Customized logo: Yes;