1. The strap made of ECO-friendly silicone 2. Display Hour/Minute 3.assorted color available, Logo Printing According to your requirement 4. Size:XXS/14.5cm; XS/16cm; S/17cm; M/18cm and L/19cm 5.Weight 40g/piece 6.can mixed with Selected Tourmaline, minus ion powder, Germanium powder, Titanium, etc. On production. 7. USD:0.45-3/pc 8.Waterproof 1-3 degree.