![Casio F-30 Early 90's simple vintage. Just spent 20 minutes working out how to change the battery. See picture 2 to see why! : r/casio Casio F-30 Early 90's simple vintage. Just spent 20 minutes working out how to change the battery. See picture 2 to see why! : r/casio](https://i.redd.it/casio-f-30-early-90s-simple-vintage-just-spent-20-minutes-v0-ynrzcs9tv6i81.jpg?width=2722&format=pjpg&auto=webp&s=ce31c550e6dc741d7ab84fd0028caaa5573c007a)
Casio F-30 Early 90's simple vintage. Just spent 20 minutes working out how to change the battery. See picture 2 to see why! : r/casio
![Casio's WSD-F30 is a longer-lasting and (slightly) slimmer rugged smartwatch - NotebookCheck.net News Casio's WSD-F30 is a longer-lasting and (slightly) slimmer rugged smartwatch - NotebookCheck.net News](https://www.notebookcheck.net/fileadmin/Notebooks/News/_nc3/2018_08_29_14_59_03_Lineup___WSD_F30___Products___Smart_Outdoor_Watch___PRO_TREK_Smart___CASIO.png)
Casio's WSD-F30 is a longer-lasting and (slightly) slimmer rugged smartwatch - NotebookCheck.net News
![Casio Pro Trek Smart WSD-F30 smartwatch has a smaller case, better power management, and improved dual-layer display Casio Pro Trek Smart WSD-F30 smartwatch has a smaller case, better power management, and improved dual-layer display](https://www.g-central.com/wp-content/uploads/2018/08/Pro-Trek-Smart-WSD-F30.jpg)
Casio Pro Trek Smart WSD-F30 smartwatch has a smaller case, better power management, and improved dual-layer display
![Casio PRO TREK Smart WSD F-30 rugged Wear OS outdoor watch with GPS announced [Update: Available from January 18] Casio PRO TREK Smart WSD F-30 rugged Wear OS outdoor watch with GPS announced [Update: Available from January 18]](https://images.fonearena.com/blog/wp-content/uploads/2018/08/Casio-PRO-TREK-Smart-WSD-F-30-1.jpg)
Casio PRO TREK Smart WSD F-30 rugged Wear OS outdoor watch with GPS announced [Update: Available from January 18]
![CASIO Pro Trek Touchscreen Outdoor Smart Watch Resin Strap, Black, 27 (Model: WSD-F30-RGBAU) : Amazon.in: Fashion CASIO Pro Trek Touchscreen Outdoor Smart Watch Resin Strap, Black, 27 (Model: WSD-F30-RGBAU) : Amazon.in: Fashion](https://m.media-amazon.com/images/I/41NxrnupvHL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOUR%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA240%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
CASIO Pro Trek Touchscreen Outdoor Smart Watch Resin Strap, Black, 27 (Model: WSD-F30-RGBAU) : Amazon.in: Fashion
![BUY Casio ProTrek GPS Dual layer display Smart Watch WSD-F30-RG - Buy Watches Online | CASIO NZ Watches BUY Casio ProTrek GPS Dual layer display Smart Watch WSD-F30-RG - Buy Watches Online | CASIO NZ Watches](https://www.nzwatches.com/media/catalog/product/cache/f20a3dad9a18e1857a6578422466bfb5/w/s/wsd-f30-rg_00_1.jpg)