Details Model & Movement Model: BJ2169-08E Movement: B740 Eco-Drive Powered by any light source, continuously and sustainably, eliminating the need to replace watch batteries. Band & Clasp Band Type: Polyurethane Strap Clasp: Buckle Case & Dimensions Case Width: 46mm Lug Width: 22mm Case Material: Silver-Tone Stainless Steel Crystal Material: Sapphire Crystal Superior scratch resistance and hardness Dial & Details Dial: Black Details: Plastic Luminous Hands and Markers Movement Functions 1 Second Chronograph Measures up to 50 Minutes Depth Display to 50 Meters Auto Start Dive Mode Maximum Depth Memory 12/24 Hour Time Power Reserve Indicator Date