Type: DisplayRated voltage: 24VRated power: 250WUnder voltage: 21VOver current: 16AP00: Backlight brightness,level 1 is the darkest,level 3 is the brightest;P01: Mileage unit,0: KM; 1: MILE;P02: Voltage level: 24V,36V,default 24V;P03: : 0 - no sleep; other numbers are ,range: 1-60; unit: minute;P04: Wheel diameter: unit is inch; accuracy: 0.1;P05: Number of speed magnets: Range: 1-100;P06: Speed limit: range 0-100%,100 means unlimited speed;P07: Zero start,non-zero start setting,0: zero start; 1: non-zero start;P08: Soft start,hard start setting,0: hard start,1: soft start;P09: Automatic cruise,0: cancel cruise function,1: auto-cruise starts after 7 seconds of throttle;P10: Password is used,0: no password is required,1: password is required;P11: Password: 00-99;P12: ODO clear setting Press the button for 5 seconds to clear thecolour: blackMaterial: plasticSize: Diameter: 46.6mmLength: 88mmPackage Contents:1 * controller1 * round meter1 * electronic brakeOnly the above package content, other products are not included.Note: Light 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.