http://www.amazon.com/gp/product/B00NOVPRDW/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00NOVPRDW&linkCode=as2&tag=blesthisstuf-20&linkId=SQ6IOJRKL4PGEGSN
- Environmentally friendly water-activated Magnesium-oxide battery module
- Add water once per day for up to 72 hours of continuous light
- Supplied in a rugged, environment-proof package allowing up to 10 years storage without degradation
- Safe to use in any weather conditions, even if submerged in water
- Unlimited accessory options for attachment during operation
