1. The handle is ergonomically designed with comfortable buttons, good hand feel, and simple operation 2. High quality materials are not easily worn out, convenient to use, and 3. Power supply 12V red positive black negative high voltage line induction clamp, clamped on the high voltage line of cylinder 1 Product name: ignition timing Speed: 200-10000r/min Weight: 0.5kg : outside the high-pressure coil of the first cylinder Input voltage: 12v Working temperature: 0-40 C Sensing size: 10mm Color: Black & Red Material: ABS + PCB + Electronic Components Package Contents: 1 set * automotive ignition timing machines 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.