This Citizen Eco-Drive Promaster Aqualand BN2021-03E belongs to Citizen’s very popular Promaster diver collection, which consists of some of the market's best and most popular diver's watches. This is one of the most contemporary Eco-Drive PROMASTER AQUALAND range. BN2021-03E is robustly built, it delivers quite a few enhancements that maximum toughness, accuracy and visibility all in one. BN2021-03E is water-resistant for 200M. It is designed for professional diving, the synthetic rubber strap allows you to wear it on wetsuits. Moreover, this Promaster gave to its outrageous size and colourful hands, it a fashionable piece that fits everyone in a casual outfit. Last but not least, it Eco-Drive can run for approx 11months, highly efficient. Overall, BN2021-03E has the cutting-edge specs that fit in an all-new design diver watch. Movement Eco-Drive Calibre No. J250 Max Run, Approx 11months Exterior Case: Stainless Steel Case Size: Diameter 48mm, Thickness 17.8mm Weight 177g Glass: Crystal Glass Strap: Black Synthetic Rubber Other Details Promaster series Water-resistant 200M Date Display Depth Display to 70m Eco-Drive ( recharged by any light source, no need to change battery) Insufficient Charge Warning Function Made In Japan Maximum Depth Memory Overcharge Prevention Function Power Reserve Indicator