I purchased this for work but never used it, so it has been in storage. Although it is new, please understand that it has been stored at home. Product Details Product Size: Approximately W47 x D18 x H47mm Product Weight: Approximately 24g Display Method: LCD digital 4-digit Maximum Set Time: 99 hours 59 minutes Count-up Maximum Display Time: 99 minutes 59 seconds Sound Duration: Approximately 1 minute Power Supply: Lithium button battery CR2032 x 1 Notification Method: Alarm and Vibration / Alarm / Vibration Operating Temperature Range: 0-40°C Clock Accuracy at Room Temperature: Monthly difference ±30 seconds Auto Power Off: Approximately 10 minutes