glassninja
Here is a compact gadget that sounds a 130 db siren when you are in trouble to get you out of trouble. The SOUND GRENADE+ weighs less than 1 ounce and has a 1-year battery life. The siren sounds for 30 minutes unless the pin is returned to the device. The device has a water-resistant shield. Costs under $20 at this time.
*some of our articles have aff links. Please read our disclaimer on how we fund Exxponent.
