Dear Sir/Madam, Style:Smart Ring Material:Pure titanium black glaze/golden white enamel Thickness:0.5 Centimeter Property:Waterproof Shockproof dustproof Size:American standard ring size 7-12, 6 sizes available Color:Black and White Waterproof grade:IP68 Hot sale with:drone Similar product:Dji Phantom 3 Perfect Match to:Fashion Watch Show More