Package: 1 * LED light emission cap

• Material: high optical glass fiber, condenser strong, good exposure, hats, high quality cotton brushed fabric
• Usage: By switching regulator long bright flash slow flash off.
• Size: adjustable cap circumference: minimum 50cm, maximum 58cm (6 caps) manual measurement, different measurement methods and measuring tape, 2cm error is maintained at about
• Battery: The product itself comes with 2 smelt original button batteries (for the original CR2032), long light emission time of the measured data for sustainable 80 hours; battery can be replaceable, convenience stores or supermarkets are sold.

Material: high optical glass fiber, condenser strong, good exposure, hats, high quality cotton brushed fabricXINFACO.,LTD