Why use an analogic slide rule in this technological age? The same reason we love tool watches - there's nothing quite like getting our hands dirty. In pre-digital 20th century, the circular slide rule was utilized to execute simple to semi-complex calculations, which you can now achieve on-the-go with the Expedition Engimath.

Sinharaja Forest Reserve is located in the south-west of Sri Lanka, a treasure trove of protected endemic wildlife & plant species in just 88 square kilometers of land. The landscape has been described as ‘a series of ridges and valleys intertwined with a network of streams flowing into surrounding rivers’ - absolute heaven to an adventurer. Enjoy scenic trails like Moulawella and Sinhagala that wind through dense jungles, while bird watchers can observe over 140 species that include Sri Lanka’s own blue magpie, white-headed starling, and green-billed Coucal, amongst many others. Put aside the screens and prepare for an unforgettable immersive experience.

Specifications:

• Case: 316L Stainless Steel with sandblast and polished finishing 
• Movement: Japan-made Miyota 9039, automatic, self-winding, hacking seconds, 42-hour power reserve, 28,800 bph. 
• Water Resistance: 200m (660ft) / 20ATM
• Crown: Dual screw-down crown with custom embossed BOLDR logo
• Bezel: Inner rotating bi-directional bezel
• Dial: Ombré Green matte-texture dial with Swiss Superluminova BGW9 
• Hands: Custom hands with Swiss Superluminova BGW9
• Lens: Chamfered edge sapphire crystal with Anti-Reflective coating
• Strap: Jungle-Green canvas strap
• Case size: 41mm (Diameter of dial)
• Case thickness: 12.8mm with glass
• Lug size: 20mm
• Lug to lug: 47.5mm
• Case Back: See-through case-back with custom artwork
• Individually numbered