? Presentation tool of a ring type design that enables more effective presentation by allowing both hands to be used freely. ? It is a button layout that prevents mistakes in pressing button operations that are likely to occur during presentation, taking into consideration the priority of operations. ? It is possible to attach to a pen type laser pointer. Upgradeable with reasonable “page feed / return” function. ? Material / Body: PC · ABS, Ring part: PC · Elastomer, Receiver: PC ? Communication method / RF (radio wave) method · 2.4 gHz frequency band ? Body size (W · D · H) / 32 × 32 × About 32 g, Receiver size / 26 × 17 × 5.5 mm Mass / Body: Approximately 12 g (including battery), Small ring (for laser pointer): Approximately 4.5 g, Receiver: Approximately 2.5 g – Accessory / Alkaline Button Battery 1 (LR 43 · for trials) · Small ring (for laser pointer) · Storage pouch ? Battery life / (when using alkaline button batteries) Operating time Approx. 15 hours (when operated once every 30 seconds) / Radius of about 15 m ? Use of lead-free solder ? Supported OS / Japanese Windows: XP · Vista · 7 · 8 · 10, Japanese Mac: OS 10.5 · 10.6 · 10.7 · 10.8 · 10.9 · 10.10 · 10.11 (intel processors ? Supported Powerpoint / For Windows: 2003 · 2007 · 2010 · 2013 · 2016, for Mac: 2008 · 2011 · 2016 (Slide show execution can not be operated on 2008 for Mac 2008) ? Support Keynote / Keynote 4 (2008) ·Five (2009) · 6.0 (Slide show playback can not be operated.) (* Please see the dedicated website for the latest supported OS information.http: //www.kokuyo-st.co.jp/stationery/fp/) ? Installable Applicable model of pen type laser pointer: Main body diameter ?13 ~ 14.6 mm and mounting space 32 mm or more. ? When using a stick, please use “in the form of holding an instructor on one hand and attaching a finger presenter to the other hand”. ? Please read the instructions and use it correctly. ? This product uses radio waves. When receiving similar radio waves from the outside, it may occasionally malfunction. Do not use it in equipment that may have a serious influence. ? Do not use in aircraft or hospitals where use is forbidden because it uses radio waves and may affect electronic equipment and medical equipment (eg cardiac pacemaker) etc. ? This product is for PC only. It can not be used by product alone. ? When discovering that white powder and liquid leakage are occurring near the battery · White powder is a powder crystallized from liquid leaked from the battery. Be careful not to touch the skin directly because it is a strongly alkaline substance. · If the battery fluid adheres to the skin or clothing, immediately rinse with clean water such as tap water. · When the liquid of the battery enters the eyes, since there is a danger of injury such as blindness, do not rub and immediately wash with plenty of clean water such as tap water and then get medical treatment by the doctor.