4.2 cm square diamond shape, 5mm thick
· Lightweight, bio-compatible acrylic
· Resonating cell
· 24-carat gold tuning board
· 25 m coil of fine copper wire
· Extremely durable and waterproof
· Requires no batteries and no maintenance
· Supplied with a nylon cord
· Easy to use - simply wear it inside or outside a shirt or blouse
· It requires no special care just remove grease or dirt with a damp cloth