LED Flashing light up armband

Battery life is between 30/40hrs

Battery type :2PCS CR2032 (NOT INCLUDED)

Using time: 80hours

Water proof

Dimensions: 2.5CMx46CM

Adjustable 29cm-36cm

Weight: 30g

Four flashing modes: Quick flashing/Slow flashing/On/off

Material:  Nylon with Velcro strap

Colour： Red/Green/White/Pink