Product information :
Material: ABS
With or without pause: yes
Whether it is waterproof: yes
Applicable sports: basketball, football, badminton, table tennis, track and field
Applicable scenes: running, fitness equipment, sports trends, foot basket row sports, sports outdoor bags, swimming and wading
Specifications: HW807

Note：The price is more than 50$, not responsible for any after-sales, mind not to shoot

Packing list:
Heart rate monitor*1