Description Size Weight: 48 x 48 x 13 mm / 28.5 g Color: Gray Material: PC, SUS Composition: This product, charging cable, instruction manual Main functions: Aim, GPS, auto slope, active green, voice type, multi-language support Provided data: height compensation distance, flying distance, automatic hole recognition, and aiming function Naejang Golf Course: Golf courses around the world Supported languages: Korean, Japanese, English, Chinese Power: USB C type Operation time: Up to 54 holes play when smart power saving mode is applied.