Review on 🆘 Sirius Signal SOS LED Electronic Visual Distress Signal with Daytime Distress Flag, Whistle - CG Approved: Stay Safe with Reliable Emergency Signaling by Brian Garrett

This is a reliable product. Provided the batteries last long (be sure to check every season and before a long trip; bring spares too) this is a great replacement for older flashlights that burn at high temperatures and need to be replaced every few years. , and burn just a few seconds. The app this electronic flash can be paired with allows for easy remote control (via Bluetooth) and can send "I'm fine" or panic messages. The latter depends on your phone's connectivity, so it's not that exciting. Unscrewing the E-Flare head is very easy. Closing it again is quite difficult. Unfortunately this has to be done to replace the batteries (or put in the originals). Take your time figuring out how it's supposed to work (read the rather sparse guide a couple of times) and tread carefully. You don't want to break anything or break the water seal. Coast Guard approval makes this a solid purchase for any boater, even with the caveats above.