CoolFire (The Original) - USB-C UV Free Solar Watch Fast Charger for All Eco Solar Watches. Safe 24/7 Charging (No Timer Needed). Reloj Hombre Portable Charger. Fits G-Shock, Citizen, Seiko, Garmin GY

Fantastic little item, charged up my casio mudmaster and citizen eco drives, easy to set up, easy to use, and actually works. Doesn't over heat, 2 different pad sizes for different watches, well worth buying

There are devices that keep automatic watches fully wound when they are not being worn and now there is one to recharge solar watches off the wrist; it is the "CoolFire Solar Watch Fast Charger (compatible with all kinds of eco solar watches) 1046". Getting sufficient light onto a watch-face during the darker months to add to its current charge state is a perennial problem and necessarily involves artificial light sources, most of which emit varying levels of heat that could seriously damage the watch's internal components if sufficiently close (halogen and filament bulbs are the worst); at best, when too distant, charging can be exceedingly slow and need many days. Even with cool- or cold-running CFL or LED bulbs, 24-48 hour charge times are typical and may not then fully charge a watch. The LEDs used in this are a true cold light source and 22 of them produce a strong white light. Power is via a USB cable which may be connected to a computer or a mains USB plug adapter. A co-axial jack socket is a possible power provision option but the enclosed leaflet neglects to mention it but presumably also requires 5v at 2A. Not all solar watches are equal and some charge more quickly than others. The instructions for different watches may include charge times under various lighting conditions. According to the manual for a certain Citizen watch, 20 hours is required for a full charge at 100,000 lumens (bright full sunshine) and 60 hours at 10,000 lumens (cloudy, overcast day). For another Citizen watch, 11 hours in full sunshine is suggested confirming variations among Citizen's watches and other brands may have similar variations. With 40,000 lumens supplied by this unit, 36-48 hours may suffice for a top-up charge sufficient for up to 60 days' use although considerably longer than the 10 hours suggested by a previous reviewer for a full charge. A watch with a charge indicator (recharged only a week or two ago) may be allowed to run down almost to empty to gain an accurate full-charge time. Citizen use overcharge protection devices to terminate the process once the power reservoir is full; other brands may not. The unit is sufficiently small to fit on a bedside table, a small area on computer desk etc provided that there is at least a nearby mains socket or computer; some audio devices have USB charge ports for just such a situation. A power bank is yet another power source option. Other than the unit and USB lead, two soft rubber watch supports/masks are included to respectively suit watches of around 43 mm and 38 mm diameter; there is no specific provision for small-faced ladies' watches and some light leak will occur unless further masked in some way. The unit is light but unstable as the length and weight of the USB lead tend to drag it but with a weighty all-metal bracelet watch mounted it is perfectly stable. Lightweight poly-carbonate watches with silicone, nylon or fabric straps may be a problem unless extra weight, e.g. several large coins, is placed on the back of the watch. This charger is faster, brighter and more efficient than the CFL desk lamp first used or the LED one later used, both with lamp-to-watch distances of around 15-18 cm and typically for up to 48 hours, sufficient for at least 50% charge levels in most instances. There is an option to insert two AAA batteries via the base and then to use it as a super-bright torch or emergency light.

It works well and will take a g-shock solar watch from low charge to the start high charge in a few hours as opposed to days of strong natural light (rare in the UK winter if you work most of the day inside). However, the charge does not ast as long as with natural light - I was back to low battery in a couple of weeks. Easy to use, good price, lightweight & sturdy. Very little heat comes off it as well. Exreme brightness Cable is not a usb to c type as originally stated but a usb to micro not that it matters as comes with the cable

This little gadget does exactly what it says and it has saved my watch excellent from especially useful it will be through the dryer months.

My hubby has a Solar charged G Shock watch. When he needs to charge it he was having to leave it on the windowsill for a couple of days to re boost the battery. It was even longer in the winter months. I was mooching on Amazon and came across this. I’m so pleased I bought it for him because it’s brilliant. It runs on usb and you just plug it in and place your watch ( face down) on top of the unit. It’s a nice dinky thing so doesn’t take up a lot of room. My hubby usually pops it on for about 8 hours and then his watch is fully charged. The watch battery then lasts several weeks. Your watch face does get warm when charging but this soon cools off. It’s sooo much quicker than having to rely on actual sunshine. And because there’s no actual fittings it would fit any solar watch. I think this is such a great idea and would definitely recommend to anyone looking for something to charge their watch in quick and reliable time.

Neat effective and I like it. There are two rubber attachments for different size watches the fit isn’t quite perfect but it’s certainly good. There is a little light leaking but not enough to bother me. There is a bit of residual heat in the watch but is dissipates quite quickly. Overall a pretty neat gadget, I’d repurchase as a stocking filler for Christmas!!!

I came across this item by chance. As a person who collects watches and has a number of Eco Driver ones that charge by sunlight I have found this device very useful. As someone who lives in an area with very little sunshine - particularly in winter - and who keep their watches in covered watch cases charging is an issue. I have two different size Eco Drive watches and this item comes with different size rings to suit whatever watch you are charging. 12 hours charging your watches using this item gives 6 months of power. Straight forward to use. Probably of limited value if you only have one or two watches but in my case a God Send.

Pleased with this product and at this time of the year in the UK it allows the watch to function

this item seems to work fine to charge my Citizen watches (I have 12)... if your watch doesn't have a charge meter it's hard to tell how fully charged the watch is so a review is difficult, however, I would recommend this unit if you wear your watch all the time and don't have time to leave it in the sun once in a while (especially in snowy winter)

Den är effektiv i att ladda, gör helt klart vad den är tänkt att göra, men den genererar betydligt mer värme än vad jag fått uppfattning att den skulle. Inte så klockan får skador, men mer än vad som känns helt tryggt. Jag skulle inte ladda mer än 4-5 timmar i streck

Funciona perfeitamente, tem excelente qualidade, muito prático. Vale o que custa pois a satisfação é certa.

Es un poco caro pero lo gana en calidad es muy útil para los relojes solares como el citenze eco draiver

Only used it on G-Shocks but to give you an idea of the speed; Frogman from one bar to full in about 2 hours. Rangeman (old style) from empty to full in 3 hours. New Rangeman (bluetooth) from reserve to full in 2 hours. Still have a few to charge but this thing is fast.