Product Name: Speedmaster Moonwatch Professional
Brand Name: Omega
Model Name: Speedmaster
Model Number: 311.30.42.30.01.006
Type: Men's
Material: Rust-resistant
Case Size: Approx. 42.0 mm
Bracelet Size: Approx. 21.0 cm
Movement: Hand-rolled
Water Resistance: 50 meters
Nameplate: -
Text Dial Color: Black
Functions: Chronograph

Regarding

water resistance: In daily life, water resistance is suitable for watches with water pressure below 5 atmospheres, but their waterproof coating should be cleaned with caution. Watches with a water resistance depth of 10 to 20 bar or less are suitable for water sports, but for recreational activities such as diving, we recommend choosing a watch with a water resistance depth of 100 meters. Watches manufactured before 2000, such as antique watches, may have lost their water resistance due to age. Even watches with a water resistance depth of 200 meters should be used with care in humid environments.