1. Material: titanium alloy
2. No spring press, adopts one-piece bullet design
3. Sturdy material, not easy to corrode, durable
4. Light weight, no burden to carry
5. Rounded edges, frosted hand feel comfortable
6. Size: classic 7.7 x 2cm; upgraded 7.7 x 2.2cm
7. Weight: classic 11g; upgraded 12g