The Military Edition of the Suunto X-Lander watch is loaded with powerful features. Watch features a black negative face. Altimeter with vertical speed measurement. Barometer with pressure difference measurement. Built-in compass. Black aluminum housing withstands tough use. Submersible up to 3 ATM (100 ft.) and buttons can be used underwater. Blue blacklight illumination. Durable black rubber strap. User-replaceable battery.