If you've got a DryDoc case- you probably don't want to lose it, especially when it's protecting your electronics. The DryDoc coiled tether will help your case stay connected to a variety of places,...
For 12 Volt Batteries; Automatic Charger And Maintainer; 1.5 Amp Charging Current; Battery Charge Status LED Indicator; With Ring Terminal/ Alligator Clip Cable Attachments