Product on and Function Description 1. OLED high-definition display screen 2. Waterproof charging port- 3. Counting key touch counting 4. Adjustable size 5. Within fifteen seconds, no one will use the automatic lock screen. To restart, just click on the counting part to wake up the counting 6. Long press for 15 seconds to automati cally reset to zero 7. Humanized design: The packaging box is equipped with skin friendly silicone rings, wh ich can be freely adjusted in size, comfortab le, convenient, and easy to manage
- Adjustable size 18mm , 20mm , 22mm
- HD Led Counter USB to TYPE-C