brand new and high quality. Made of high quality material, durable and practical to use. Suitable forElectric bicycle. The S830 LCD has a variety of functions, which can be used as a driving computer or control the entire eBike system after conversion. If PAS is installed, the LCD can let the driver choose the required auxiliary level. It displays the remaining battery, current speed, average speed, maximum speed, clock, total travel and one-way distance. Agreement: Lithium Battery 2 protocol. Work with controller which has the same agreement. If you can't use it due to the display agreement after purchase, no refund will be accepted Operation method: Long press the up and down buttons of the instrument to enter the instrument settings. P01:Backlight brightness,level 1 is the darkest,level 3 is the brightest. P02:Mileage unit,0: KM;1: MILE. P03:Voltage level: 24V,36V,48V. P04:Sleep time: 0,no sleep;other numbers are sleep time,range: 1-60;unit minutes. P05:Assist gear 1-9 P06:Wheel diameter: unit,inch;precision: 0.1. P07:Number of speed magnets: range: 1-100. P08:Speed limit: speed percentage range 0-,100 means speed . P09:Zero start,non-zero start setting,0: zero start;1: non-zero start. P10:Drive mode setting 0: Power-assisted drive (the handle is invalid).1:Electric drive (drive through the handlebar,at this time the assist gear is invalid).2:Power-assisted drive and electric drive coexist at the same time. P11:Assist sensitivity setting range: 1-24. P12:Power-assisted start intensity setting range: 0-5. P13:Power-assisted magnet type setting There are three types of 5,8,and 12 magnets,of which 5 and 8 are single-Hall power-assisted sensors. Setting 12 is used for dual Hall assist sensors. P14:No such function temporarily. P15:No such nction temporarily. P16:ODO reset setting Press and hold the up button for 5 seconds ODO reset type: waterproof plug Material:plastic colour:black Package Contents: 1 * LCD Display Only 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.