Jaeger-LeCoultre watches introduced a new High Precision Guarantee and applied it to the Master Control Chronometre line at Watches & Wonders 2026, the brand said.<\/p>\n\n\n\n
At the Geneva show, Jaeger-LeCoultre framed the move as a step to bring chronometric testing closer to real world wear, while also presenting new Master Control models and a Reverso Tribute Enamel series that highlights miniature enamel painting.<\/p>\n\n\n
The new High Precision Guarantee, or HPG, tightens the brand’s in house testing beyond its historical 1,000 Hours Control, Jaeger-LeCoultre said. The house also noted its long technical record, including more than 1,400 calibers and over 430 patents<\/strong>, which it said underpins this year’s developments.<\/p>\n\n\n\n HPG focuses on stability in real wear conditions, with simulated pressure changes from sea level to 1,004 meters, approximately 3,300 feet, and temperatures ranging from 18 to 35 degrees Celsius, or about 64 to 95 degrees Fahrenheit. The protocol also includes multi directional shock tests from 25G to 50G, and alternating wear and rest cycles, the brand said.<\/p>\n\n\n\n Jaeger-LeCoultre said results are kept within COSC chronometer accuracy limits, creating a double safeguard for watches that also carry official COSC certification.<\/p>\n\n\n\n