Outside Dimensions:
4-3/8"L x 3-1/2"W x 1-7/16"D
Inside Dimensions:
3-15/16"L x 2-1/4"W x 1"D
........was built to keep items dry.
The closed cell neoprene o-ring creates a positive seal which does not allow water in. The boxes we tested off the coast of Alaska reached depths well beyond 100 feet without leaking. Independent tests, as well as our own, have consistently shown that all sizes of the Otter BoxTM are leak proof to at least a depth of 110 feet.
Battery Box
And it is on sale....
$5.94
After you get it all done...drill a hole barely larger than the wire you are using and seal with aquarium sealer...
The box allows you to use single, doubble, etc holders from radio shack. Just take the box with you and try the combo you want.