Welcome to our store！</br> 1、2 Working Modes: The helmet signal light has two working modes of constant on and flashing, which can meet the usage needs in different situations. 2、Silica Gel Material: The signal light is made of silica gel materials, which are waterproof and durable, with good sealing and flexibility, and can be reused. 3、Hook and Loop Fastener and Lanyard: The back hook and loop fastener fully covers and adheres more firmly. Comes with a lanyard to provide more options for wearing. 4、Applicable Scenes: Survival signal light is widely applicable to various outdoor activities such as cycling, diving, hiking, etc. 5、Multi Purpose: This helmet signal light is a helmet mounted light, can be used in all types of ground operations. <p class="wang-edit-text"><p class="wang-edit-text"> Item Type: Signal Light Product Material: Silica gel Product Size: Approx. 4x4cm / 1.6x1.6in Battery: Built In CR2032 Button Battery With A Capacity Of 150mAh (With Built In Battery) <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Signal&nbsp;Light Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>