This is a junk G-Shock Mudman watch body and strap only. As you know, the surrounding parts have deteriorated due to hydrolysis and were thrown away, leaving only this piece. I have checked the operation as a layman, but I cannot provide any guarantee, so please understand. Please use it for modification or parts. 200m water-resistant, digital display CASIO MUDMAN wristwatch. - Brand: CASIO - Model Name: MUDMAN - Year of Manufacture: 2000 - Water Resistance: 200m water resistance - Color: Black - Functions: Digital display, light function - Band Material: Rubber Thank you for viewing.