The compass part of this Underwater Navigation Compass sits inside of the rugged ABS housing for durability and reliability This Wrist Compass can a great, durable addition to any outdoor, survival or gear. You can use the item with confidence The Dive Compass can glow in the dark that you can know your direction in deep water without light. The campass will show you the way This Scuba Compass can withstand the sub-zero temperatures and the result will come out in a quick speed with a stabile accuracy The Luminous Compass has a bungee strip that you can fix it to any place you like, you can use it as a watch campass, ot fix it on your body Description This Scuba Compass can withstand the sub-zero temperatures and the result will come out in a quick speed with a stabile accuracy. The Dive Compass can glow in the dark that it will lead you to the way. The Luminous Compass has a bungee strip that you can fix it to any place you like, you can use it as a watch campass, ot fix it on your body. Features Diving compass -Color: Black. -Material: ABS,Plexiglass. -Size: 8.2x6.2x3.5 cm/3.23x2.44x1.38 inch. Bungee length: 88.5cm Weight: 90g Underwater operating temperature:-30 C ~ + 60 C Storage temperature:-22 F ~ + 140 F Function: underwater guidance Underwater depth: 50m Note: 1. 1 inch=2.54cm/1cm0.393inch. 2. Please allow 1-3 cm error due to manual measurement. Pls make sure you do not mind this. Package Including 1 * Diving compass