Measuring voltage range: 0-420V (when measuring Less than 10V, the meter needs to be powered independently) Measuring capacity range: 0-99999AH Measuring current range:0.5-500A Curve function: Dual parameter curve can be paused/run Host charge and discharge column statistics: daily/monthly/yearly report WiFi networking/Bluetooth connection: support HID computer connection: support Four standby styles: support Firmware upgrade: WiFi networking upgrade/host computer HID upgrade record: support free upgrade: support Color: Black Material: plastic Package Contents: 1 x Battery Capacity Tester 1 x Type-C Data Cable 1 x Sampler 1 x Electronic Relay Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.