A pressure relief valve allows you to slowly and safely equalize the pressure inside and out.
Features: * Designed and developed to the comply with the highest safety protection standards* Waterproof up to 1 meter depth for 30 minutes* Shockproof design with fully customizable foam interior* Total protection against dust and other solid material* Ultraviolet and impact resistant material* Pressure relief valve allows for gradual pressure equalization* Seal design provides IP67 level protection* Ergonomic, rubber covered handle* -40 ~ +194F (-40 ~ +90C) operating temperature* 400 cu in ( 6.57 liter) internal volume* 14.0 lbs ( 6.38 Kg) maximum buoyancy* 10.63" x 9.09" x 7.28" (270 x 231 x 185 mm) external dimensions* 9.57" x 7.17" x 6.18" (243 x 182 x 157 mm) internal dimensions* Weighs only 3.1 lbs ( 1.4 Kg)*** 30-day easy returns. No restocking fee. Free lifetime technical support. 1 year warranty. ***


