MEMT S1 Sports Bluetooth Neckband Earphones
>Wearing method: Neck-mounted
>Bluetooth : V4.2
>Bluetooth protocol: HFP, HSP, A2DP, AVRCP
>Built-in battery: 3.7V/110mAh polymer lithium battery
>Input: DC5V/0.5A
>Bluetooth distance: 10 meters
>Charge time: About 6 to 8 hours of music playback