material: hard plastic
ROHS past

Hanging any position of GSM mobile phone, available frequency900MHz-1800MHz, if the phone is sending or receiving a signal, it will flash, meanwhile, it can remind you have a call when you set the ring to vibration, it also can reduce thera??adialization to human brain.Any shape,color isa??available.Customers' specifications are welcome. It is good useda??for promotion and presentation for your company