Omron pedometer HJA-331T with digital display, white, uses CR2032 battery. Purchased at the end of last year and used for six months. Initialized. The battery has just been replaced. No instruction manual, but it can be downloaded from the internet. - Brand: Omron - Model: HJA-331T - Function: Pedometer - Battery: CR2032 - Color: White - Display: Digital Thank you for looking.