skmei new bluetooth smart watch multi function electronic step meter, Slivery;brown

purchase instructions: 1. all the products of our shop are packed in transparent plastic bags, and the price is not matched with watch box. the black iron box plus 3 yuan and the color iron box plus 3.3 yuan can be directly pgraphed on the website packaging links https://detail..com/offer/522547847167.html?spm=0.0.0.0.bvjxzj 2. each style can swim 30-50 meters, waterproof, but do not accept water bath 3. if the product quality problem, the buyer should cooperate and send more than 10