Big Blue - AL1300NPT Light with Hard Case Fin Accessories It informs the user about

It informs the user about the current charging status (red indicates the charging process / blue means that the battery is fully charged)

four strategic strakes on the top and underside

Using the shore or descent line as a starting/reference point makes keeping track of students easier

Waterproof uses moulded TPE tabs with Japanese loop plush for maximum hold and good looks

Big Blue - AL1300NPT Light with Hard Case Fin Accessories It informs the user aboutThe best selling Bigblue dive light series of all time now available with a heavy duty protective case. With its narrow 10 beam angle this is the perfect light for general purpose or to peer into crevices to find hidden critters! Offers great features including the four level push button on off switch, battery level indicator, and rechargeable 18650 lithium ion battery Comes with a protective case IN THE BOX: Hard Case One Light Rechargeable Battery