Product Details:
Brand: ROCKBROS
Weight: About 40g / 70g (No packing)
Color: Black Golden / Sliver
Size: About 58*32*68mm / 58*32*78mm
Material: Copper Alloy
Diameter: 21mm-23mm
Features:
1. Copper Alloy Surfaces
2. Spring Dials Effortless
3. One Bell 2 Notes
4. Small & Portable
5. Compatible With Different Diameters