3-pack Men's Ice Silk Underwear Patio Effective scanning frequency band: 67

Effective scanning frequency band: 67

Mass: 127g (including battery)

Stylish decorative appearance

Blood oxygen level range: 70% - 99%

Built-in battery: 3000mAh

3-pack Men's Ice Silk Underwear Patio Effective scanning frequency band: 67Fabric name: ice silk Main fabric composition: polyester fiber (polyester) Main fabric ingredient content: 90 (%) Crotch lining composition: cotton The content of the crotch lining: 90 (%) 1. Asians are 1 to 2 sizes smaller than Europeans and Americans. If your size is between two sizes, please choose the larger size. Due to manual measurement, allow a difference of 2 3 cm. 2. Please check the size chart carefully before purchasing the product. 3. As