Material:acrylicThe operation of the pointer to maintain the direction of stability, luminous.pointer 2 second fast return sensitive, high performance.scale mark a map.Application: outdoor directional off-road racing dedicated, field map positioning, hiking adventure mountaineering inspection needs.Description:Type:thumb compassPurpose: point to navigationIs it waterproof: yesWhether shockproof: YesWhether luminous display: YesCarrying method: handheldDisplay mode: pointer typeSports outdoor projects: bicycle cross-country hiking camping.Color:whiteWeight:43gPackage includes:1pc thumb compassThe size is measu manually, and there may be about 5mm error in the real object.