Feature: The product is displayed by 6-bit LCD, and the reading is clearer. This product counts accurately and reliably. This is a digital counter, no mechanical wear, long service life, instead of electromagnetic counter. 48*24 standard panel size, easy to install. Lithium batteries are built-in. The theoretical life of the batteries can be as long as three years and the memory time is long. Specification: Model: H7ET-BVM Voltage input: AC110-220V Timing display mode: hour / minute / second (Optional) Panel size: width 48* height 24* thickness 50mm Opening size: 22.5*45 mm Timing mode: positive timing; accumulated time Display word height: 6.7mm Built-in battery: 3V, 800mA lithium-ion battery, good display, long memory time (battery life 3 years) Reset mode: panel button reset, rear terminal reset (can be reset automatically) Timing display mode: 00000 hours 0 minutes ~ 99999 hours 9 minutes (0.1 is 6 minutes) 0000 hours 00 minutes ~ 9999 hours 59 minutes 00 hour 00 minute 00 second ~99 hours 59 minutes 59 seconds Timing work signal: (110~220V power supply) Power on: Timing; Power off: Stop timing Package list: 1 * Counter Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.