SKU: Black is the official standard: the product is only a charging dock(Excluding thread and bracelet), Can be used for charging the Honor Band 3 and Honor Band 4
SKU: Dark gray: black standard + fast charging data cable
SKU: light gray: black standard + fast charging data cable + millet fast charging head, the official price is 59 yuan!(https://item.taobao.com/item.htm?spm=a1z10.1-c.w4004-17442538792.2.11031cd2c2JoTY&id=566439794972)