Description:With 5.1 Bluetooth-compatible chip, it supports stable connection and fast transmission. And it has no delay.It is equipped with a 1000mAh large-capacity battery so that you can listen to music or talk for 60 hours.It is made of good quality ABS material, durable to use. The product has a built-in TF card slot and supports TF card listening mode.The length of this product is 18.5cm, the width is 11cm and the height is 4cm.It supports a variety of mobile devices, and has strong compatibility, adapting to for iOS, for Android system.Item Name: EarphoneMaterial: ABSColor: Black, WhiteModel: LZ-16Product Type: Neckband Bluetooth-compatible HeadsetConnection Distance: >10mBattery: 3.7V 1000mAh (Included)Charging Time: about 4 HoursPlaying Time: about 60 HoursTalk Time: about 60 HoursConnection Type: Wireless Bluetooth-compatibleSpeaker Impedance: 32Features: Neckband, Wireless, PortableSize Details: 18.5cm x 11cm x 4cm/7.28" x 4.33" x 1.57" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Earphone1 x Charging Cable1 x User Manual