Lengai Black
Lengai Black
Production is limited to 5 timepieces per month.
Lengai Black encapsulates the untamed spirit of Tanzania’s majestic "Ol Doinyo Lengai" volcano. Its deep black case mirrors the raw intensity of lava-carved landscapes, while luminous accents on the dial evoke the fleeting glow of molten rock against the night sky. A tribute to nature’s power in its purest form.
Exclusive by allocation
Exclusive by allocation
Parterra timepieces are available by allocation only. To begin your journey, request an allocation. A dedicated Personal Allocation Advisor will connect with you to guide the process. The current wait time for Lengai Black is approximately 2 months.
Key technical specifications
Key technical specifications
Featuring a 41mm titanium grade 5 case, bezel, and clasp, with 10ATM water resistance and Super-LumiNova® BGW9 hands and dial for ultimate performance. Powered by the skeleton Swiss Made caliber P-01, offering second, minute, hour, and date functions.
Made in Switzerland
Made in Switzerland
Designed in Belgium.









SWISS MADE CALIBER
Powered by the P-01 skeleton caliber, an exclusive Swiss-made movement crafted exclusively for Parterra’s All-Terrain Collection, the Lengai Black stands as a pinnacle of precision engineering and artisanal mastery.
Every detail has been thoughtfully engineered to optimize performance and showcase craftsmanship, with an open-worked architecture that reveals the intricate interplay of gears, wheels, and bridges in motion. This caliber is a rarity in modern swiss watchmaking, featuring seconds, minutes, hours, and date complications, ensuring seamless functionality and absolute precision in any environment.
Embarking on its first journey with us, this caliber is meticulously engineered to conquer any terrain.

GRADE 5 TITANIUM
Expertly crafted from aerospace-grade Grade 5 titanium, the Lengai Black is engineered to endure the most demanding conditions while maintaining an exceptionally lightweight and refined profile. This advanced material, celebrated for its unmatched strength-to-weight ratio, offers outstanding durability, corrosion resistance, and scratch resilience, making it the perfect companion for both explorations and everyday wear.
Weighing only 103 grams, our timepieces deliver an ultra-light yet undeniably substantial feel, allowing for all-day wear without compromise. Whether navigating extreme terrains or presenting your next business idea in a board room, this timepiece exemplifies the perfect synergy of strength, precision, and modern luxury.

MULTILAYERED CASE CONSTRUCTION
The meticulously engineered four-layered case construction sets the All-Terrain Collection apart from conventional three-layered designs, offering superior shock resistance and durability. Built to withstand any challenge, this advanced structure not only enhances resilience but also ensures a perfectly contoured fit, balancing comfort and sophistication for those who demand excellence in every detail.
EXPLORE THE DEPTHS OF THE UNKNOWN
Swiss Super-Luminova® BGW9 is a high-performance phosphorescent pigment that delivers exceptional luminosity and longevity. Engineered with strontium aluminate, it absorbs UV and artificial light, emitting a high-intensity blue glow with an extended afterglow duration. BGW9 maintains up to 95% of its brightness over time, ensuring optimal readability in low-light and extreme conditions.




TECHNICAL SPECIFICATIONS

BEZEL
Titanium grade 5, vertical brushed titanium
CASEBACK
Titanium grade 5, polished
CRYSTAL
Scratch-resistant sapphire crystal with a double anti-reflective coating
DIAL
Bronze-cut dial plate with Swiss Super-LumiNova® BGW9
HANDS
Diamond-cut hands infused with Swiss Super-LumiNova® BGW9

MODEL
P-01 - automatic Swiss Made caliber exclusive for Parterra with a skeletonized finish
FUNCTIONS
Hours, minutes, second dial (9h), and Skeleton date (6h)
JEWELS
30 jewels
POWER RESERVE
40 hours
WATERPROOF RATING
10 ATM/100 meters (screw-down crown)

DIAMETER
41.5mm
CASE WIDTH
45.50mm
THICKNESS
13.45mm
LUG TO LUG
48mm

WRIST CIRCUMFERENCE
160 - 260mm
FKM RUBBER STRAP
Designed for active wear with a custom screw-secured attachment, and a titanium grade 5 butterfly deployant clasp with push buttons for secure fastening.
FUSION STRAP
FKM rubber base with a polymer-coated crocodile leather insert. Classic design, screw-secured attachment, and a Grade 5 titanium butterfly deployant clasp with push buttons for a fast and secure fit.