New Pocket Auto Catch series product which makes you unique. Catching and collecting items just got easy – Auto Catch provides on-screen and vibration alerts –simply tap the Auto Catch screen to grab the items. Features Waterproof and Dustproof Grade: IP67. Support over 12 hours of use. Compatible with Mi Band 3 and Mi Band 4 soft wrist strap. New institutional design! Prevent from falling out of wrist strap. Skinlike, high flexible. Easy to clean, no stain easily. Crystal Care Instructions Please keep the product away from water or liquid. Take the product off when going to a bath, hot spring bath, swimming pool or doing vigorous exercise. Avoid knocking against rough object and use of excessive force when wearing it, to prevent distortion or loosening of accessories. Polish Pocket Auto Catch Meteor / Pocket Crystal Strap with a soft cloth to main tain its original, lustrous finish before putting it after used. Please handle your Pocket Auto Catch Meteor / Pocket Crystal Strap with care; it is non-returnable for any damages or partial damages caused by pulling, Knocking, or corrosion.