Compact green apple PiPi Nurse PLUS 414 series calculator. ● Features: Automatically calculates the drip rate of intravenous fluids and alerts with sound and light. ● Digital clock display function on the LCD screen. ● Timer function that can be set up to 99 hours, 59 minutes, and 59 seconds. ● 8-digit calculator function. Weight (g): Approximately 75 Power supply: CR2032 (lithium battery x 2) Required! One is included as a sample, but it is unusable. Dimensions (length x width x thickness) (mm): 125 x 50 x 14 Purchased on Amazon two years ago for around 4000 yen. There are some minor usage scratches, but it wasn't used much. The square part chipped when inserting and removing the batteries, but it can be used normally with the batteries inserted. Operation confirmed. No instruction manual. Carefully wiped with alcohol wipes.