Follow the sun – eternal source of power

All models in the Solartech Series 200 and 2000 are equipped with rechargeable batteries and solar cells, eliminating the need to change batteries.

The solar movements with classic functions have a dark power reserve of eight months, while the chronographs have five months. However, should the battery run out, three minutes of sunlight are enough to run the watch for one day, while 10 hours of sunlight will deliver full capacity. The solar cells capture energy from both sunlight and artificial light.

Another advantage of the Solartech Series is its advanced technology: the battery has overcharge protection, and deep discharging is prevented. Together, these features help ensure reliable and precise performance, and a long service life.

NEW: Solar Chronographs

Discover now the precise chronograph calibers 2030.D and 2040.D from Ronda's Solartech line - ideal for fans of Swiss solar watches. – Whether you prefer classic functions or chronographs, all models offer a rechargeable power source and outstanding reliability.

Advantages of the Solartech Series

Rechargeable battery

The solar cell captures sunlight as well as indoor light to charge the battery, eliminating the need for battery replacement.

Interchangeability

RONDA Solar Chronographs are fully compatible with our well-known Chronograph calibers 5030.D and 5040.D, saving on design costs and reducing time to market.

Quick start function

One minute of sunlight is enough to get a fully discharged movement running again.

Power reserve in darkness

Three-hands movements offer eight months of power reserve, while chronographs offer more than five months.

Design flexibility

Mono solar cell technology in Chronographs offers more flexibility when it comes to dial material and design.

Battery protection

Advanced technology provides overcharge protection and prevents deep discharge, ensuring a long service life.

Power saving mechanism

Power consumption is reduced by approximately 70% when the crown is pulled out.

Seal of quality: Swiss Made

All movements are available in Swiss Made design; they are of high quality workmanship and precision.

How does a Solartech movement work?

Beneath the dial of a solar watch are solar cells, which absorb the energy of the sun or another light source and convert it into electrical energy. This energy is then stored in a rechargeable battery from which the watch draws its power. Watches designed with solar movements can therefore be independently recharged, helping to protect the environment.

We recommend using dials with a transparency between 25% and 40% to enable optimal charging.

All Calibers

11½''', 25.60 mm

12½''', 28.00 mm

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Solartech – Solar quartz movements from Ronda