1. The product shell is made of a single piece of aluminum material processed by CNC precision machining, and is not a pull-out aluminum tube. The production process is complex and involves numerous steps. The of the shell may have minor defects such as bumps, sand holes, black spots, color differences, and knife marks, which are normal phenomena and do not affect its use. 2. The display screen is integrated with fully tempered glass and has a protective film attached to the . Scratches on the film are normal phenomena. Simply tear it off when using. There may be some glue overflow at the edge of the glass cover plate. Use object to scrape it off without affecting its use. Product Model: RK008 Display: 0.96-inch IPS screen Voltage measurement range: DC4-36.00V Voltage measurement accuracy: 0.01V Current measurement range 0-8.000A Current measurement accuracy: 0.001A Power measurement range: 0-240W Measurement rate: Less than 20ms Self-consumption current: Less than 0.021A Operating temperature range: 0~65 Product size: 52x20X7.8mm Screen refresh rate: 200ms Interface transmission rate: 40Gpbs Color: Black Material: Metal Package Contents: 1 x Fast Charging Tester 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.