3715 Led Flshlt W/Plastic Clip Floats in salt water with 7 lbs (3.2 kg) load. Interior Dimensions: 7.25" x 4.75" x 3.06" (18.4 x 12.1 x 7.8 cm). Watertight, crushproof, and dust proof. Open cell core with solid wall design - strong, light weight. O-ring seal.