More Details: Specifications:          General Specification             Brand Name        Lancube              Model Number        HC-S0362             Color         Black!#!amp!*!amp;Red             Wearing Type        In-ear             Material         PC+TPU             Product Weight (kg)        About 13g             Dimensions (mm)        25X20.5X11.5mm           Technical Parameters             Bluetooth Version        V4.1+EDR             Transmission Distance        10M             Frequency         2402MHz-2480MHz             Charging Time        About 1 hour             Music Time        3-4 hours             Talk Time        4-5 hours             Standby Time        125hours             Battery Capacity        3.7V、 50x2=100mAh    Package  Included:                  1 X Pair Lancube Bluetooth Headphone            1 X Charging Cable            1 X Storage Bag            2 X Pairs Earmuffs            1 X Buckle