Caldwell Ballistic Precision Chronograph Premium Kit - Official Caldwell product - Measures in FPS or MPS - accuracy rating of 99.75% - Works in velocity range of 5 fps to 9999 fps (1.5mps to 3047mps) approx - Includes 15ft audio jack cable - Large LCD display - Large adjustable shooting area - Ideal for firearms, archery, airsoft, paintball, slingshots, arrows, airgun tuning - Primarily suitable for outdoor use. Lighting kit recommended for indoor use (not supplied, available separately) - Battery operated - Requires 9V alkaline battery (not supplied) - Supplied as Chronograph with Light Kit, Tripod, audio cable and carry bag only - Phone pictured is NOT INCLUDED - Any accessories pictured are for illustration only and are not included.