# Solar-Powered Timepieces The Casio G-Shock Digital GR-8900A-7ER Watch Uses Reusable Energy By Taylor Keefe | Published 2011-12-18 | Fashion Source: Trend Hunter, https://www.trendhunter.com/trends/casio-g-shock-digital-gr-8900a-7er References: [freshnessmag](http://www.freshnessmag.com/2011/12/16/casio-g-shock-digital-gr-8900a-7er-watch/) & [gshock](http://www.gshock.com/) Changing the batteries in your favorite watch can be a hassle, but thanks the solar-powered [Casio](https://www.trendhunter.com/trends/gshock-g5600bg1) G-Shock Digital GR-8900A-7ER watch, recharging the juice for this timepiece means spending time in the sun. Casio is taking an eco-friendly approach when designing watches with its Tough Solar technology. The technology reduces battery waste by implementing micro-solar panels to the face of the Casio G-Shock Digital GR-8900A-7ER timekeeper. This means that more time frolicking in the sun will keep the watch fully charged. The timepiece is a throwback to the [older versions of the G-Shock](https://www.trendhunter.com/trends/casio-gshock-dw5000r), using the [classic, minimal design](https://www.trendhunter.com/trends/dw5000r) and ditching the bright colors made popular in recent years for a solid black colorway. The watch also features the familiar bulky casing for added shock resistance, as well as a multitude of digital functions, both staples in the G-Shock series. ## Trend Insights (Trend Hunter) - Score: 4.9/10 - Popularity: 57% | Activity: 83% | Freshness: 8% - Audience gender: 90% men, 10% women - Primary generations: Millennial - Top markets: North America ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Fashion](https://www.trendhunter.com/fashion) > [Hip Fashion](https://www.trendhunter.com/hipfashion) ## Key Themes ### What Makes This Trend Stand Out - **Eco-friendly Watches:** Designing watches with micro-solar panels reduces battery waste and offers a sustainable energy source. - **Solar-powered Technology:** Integrating solar-powered technology into timepieces allows for convenient recharging and eliminates the need for traditional batteries. - **Minimalist Watch Design:** Embracing a classic, minimal design in watches provides a unique aesthetic and appeals to consumers seeking simplicity. ### Sectors Adopting This - **Watch Manufacturing:** Watch manufacturers can incorporate eco-friendly features, such as solar-powered technology, into their products to meet the growing demand for sustainable options. - **Renewable Energy:** The use of micro-solar panels in watches presents an opportunity for companies in the renewable energy sector to expand into new markets and applications. - **Fashion Accessories:** The trend towards minimalist watch design opens up opportunities for fashion accessory brands to create sleek and understated timepieces that cater to minimalist aesthetics. ## Related on Trend Hunter - [Eco-Friendly Ruggest Digital Watches](https://www.trendhunter.com/trends/g5600bg5.md) - [Recycled Resin Timepieces](https://www.trendhunter.com/trends/gshock-g5600bg1.md) - [Off-Grid Adventurer Timepiece Models](https://www.trendhunter.com/trends/casio-pro-trek-prg340b3.md) - [Sustainable Durable Timepieces](https://www.trendhunter.com/trends/cordura-eco-fabric.md) - [Stylish Durable Watch Designs](https://www.trendhunter.com/trends/gshock-models.md) - [Ocean Plastic Watch Collaborations](https://www.trendhunter.com/trends/surfrider-foundation-1.md) - [Rugged Everyday Watch Models](https://www.trendhunter.com/trends/gshock-analogdigital-ga010.md) - [Rugged Fashion-Forward Watches](https://www.trendhunter.com/trends/gshock-gsteel-gbm2100-series.md) - [Ultra-Rugged Pilot Timepieces](https://www.trendhunter.com/trends/gshock-gravitymaster-grb300.md)