Description
In 1968, LONGINES introduced the Ultra-Chron Diver, marking the debut of the first dive watch with a high-frequency movement. LONGINES had long been at the forefront of precision timekeeping, having crafted the first high-frequency device capable of measuring 1/10th of a second in 1910. By 1959, the brand developed a groundbreaking high-beat wristwatch movement, earning observatory chronometer accolades for its exceptional accuracy. This new Ultra-Chron pays homage to the design and professional diving capabilities of the original, featuring chronometer-certified movements with an exclusive LONGINES calibre, silicon balance-spring, and magnetic resistance.
Features:
Ref: L29374722
Calibre: L836
Movement: Self-winding mechanical movement beating at 36'000 vibrations per hour, with a monocrystalline silicon balance-spring
Power Reserve: Approx. 52 hrs
Functions: Hours, minutes, seconds and date
Dial: Sunray silver
Bezel: Fixed
Thickness: 10.95 mm
Product Weight (Approx.): 68.0 g
Longines Watches are also available in our Ipswich and Windsor stores.
Specification
Shipping & Returns
We are proud to offer free UK delivery on orders of £101 and over placed on our website. Robert Gatward Jewellers currently only operates and supplies within the United Kingdom.
Orders placed before 12pm Tuesday–Friday will be dispatched the same day (stock permitting). Orders placed after 12pm on Friday through to Monday will be dispatched on Tuesday. If there is a specific day you would like to receive your order, please let us know as soon as you have placed it and we will do our best to accommodate.
Orders totalling £101 or more will be posted using Royal Mail Special Delivery. Orders totalling less than £101 will be posted using Royal Mail 1st Class Signed For Delivery (1–2 working days). Although next‑day delivery cannot be guaranteed with this service, the majority of these orders arrive the following working day, including Saturdays in many cases.
For delivery information regarding Engagement Rings, please click here.


