Meterial:germanium,titanium,silicone,negtive ion, movement colour:according to you Feature:safe,sport,healthy,Muti-function THB 2012 magnetic bracelet watch:Item Name2011 Negative Ion Rubber Bracelet Watches with CE&ROHS StandardMaterialgermanium,water-soluble titanium,silicone,negtive ion, movement etc.sizeSize: L20/19 M17/16 S15cm is OK or Custom sizeCertificationCE,Pony,AND SMQ test ...