Features: 1. Simple and efficient setting, only takes a few seconds to set up. 2. Equipped with a switch, the display can be turned off, and no power will be consumed. 3. Accurately display the percentage of battery capacity and voltage, intuitively grasp the battery capacity status. 4. PVC film surface, waterproof and can be used with confidence. 5. Adopting high specification craft, sturdy and durable to use. Specification: Material: PCB/HTN Product Size: Approx. 6.1x3.3x1.3cm/2.4x1.3x0.5in Display Range: 8-100V Compatible Battery: Lead-acid battery, lithium battery, lithium iron battery (can be set up by yourself) Applicable Voltage: 12-84V Operating Temperature: -10~50 Light Color: Blue, White, Green (optional) Package List: 1 x Display 1 x Connecting Line Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 1Simple and efficient setting, only takes a few seconds to set up. 2Equipped with a switch, the display can be turned off, and no power will be consumed. 3Accurately display the percentage of battery capacity and voltage, intuitively grasp the battery capacity status. 4PVC film surface, waterproof and can be used with confidence. 5Adopting high specification craft, sturdy and durable to use.