Alkaline Flash reversing light Led light for buoys, with alkaline batteries, flashes at a rate of 50 to 70 flashes per minute. Moisture-resistant and easy to store, even upside down. *Triggered by magnetic contact, insensitive to humidity. *Battery life: > 12 hours *Easy to check operation *Built-in non-interchangeable alkaline batteries. *Validity: 5 years *Delivered with its plastic holder. *Supplied in a blister pack *SOLAS approved and Division 240 compliant.