B11 Wireless Neckband Bluetooth in Ear Earphone Headset Earbud Portable Headphone Handsfree Sports Running Sweatproof Compatible for All Smartphones (Multicolour)Name: B11 Wireless Neckband Bluetooth in Ear Earphone Headset Earbud Portable Headphone Handsfree Sports Running Sweatproof Compatible for All Smartphones (Multicolour)Battery Charge Time: 2 HoursBluetooth Version: 5.0Char