Kryptonite F-300 USB To See Front Light
- ShowProduct Information THE KRYPTONITE BRAND — OVER 40 YEARS OF PREMIUM QUALITY PRODUCTS THE NEW STREET LIGHT SERIES Hi... read more
- Show Reviews & Q&As
- Show Front Bike Lights Guide
- Show Delivery & Guarantee
Product Description
THE KRYPTONITE BRAND — OVER 40 YEARS OF PREMIUM QUALITY PRODUCTS
THE NEW STREET LIGHT SERIES
Highest Lumen and feature combination… AT THE RIGHT PRICE!
Robust Safety Features
INCLUDING:
•DAYTIME PULSE MODE — Be seen with differing flash pattern.
•NIGHTTIME PULSE MODE — Be more visible at night with unique flash pattern.
•ECONOMICAL FLASH MODE — When battery is less than 10%, eco mode kicks in and you’ll be able to get home safely.
•SIDE LIGHTING FOR MORE VISIBILITY!
ADDITIONAL CONVENIENCE FEATURES
INCLUDING:
• FLEXIBLE MOUNTING OPTIONS — Mount front lights vertically or horizontally AND on head tube.
• MEMORY MODE – Saves you time by storing your last mode.
• LOW BATTERY AND CHARGING INDICATORS.
| F300 | RUN TIME (hrs) | LUMEN |
| High Steady | 1.5 | 300 |
| Medium Steady | 3 | 150 |
| Low Steady | 11 | 60 |
| Daylite Pulse | 8 | 300 |
| Nitelite Pulse | 10 | 60/170 |
| Economic Flash | 20 | 6 |
Occasionally, without notice, manufacturers change product design and/or specifications.
Front Bike Lights Guide
Front Bike Lights Guide
If you ride lit streets and roads after dark you will need lights so you can be seen by other road users. If you ride roads and paths with no street lighting then a front light will be needed so you can see, not just be seen. The brightness of a light is measured in Lumen.
Mountain bikers who wish to ride trails in the dark will need two super-powerful front lights. Front lights almost always have a more powerful output than rear lights.
Lumen is the measure of the brightness of a light, though it is worth noting that not all brands measure in the same way. The lens has a massive effect on what we see lit ahead, some lights will have a widespread while others will be more of a spot.
We have a Lights Comparison Tool and Rear Lights Guide to help you choose the right bike light for your needs.
Lumen Ranges
If you commute on lit-up city streets, you will need lights to be seen by, rather than to see by. A front light with around 100 lumens should be enough for city commuting, over 400 Lumen will be best if you ride fast or you live in a darker area. Add lumen to your front light requirements up to around 800 for a totally dark cycle path.
For comparison, the full moon on a clear night is about 1 lumen, a smartphone's backlight is around 20, and a single standard car headlight is 1200 lumens.
The more lights you have, the more visible you will be to traffic so ideally, you should have more than one light with one on flash mode so you are seen clearly at junctions and crossings by other road users. Flashing lights are much easier to see by others especially when it is raining.
Side Visibility / Beam Spread
Bike lights will often mention having side visibility that adds safety to the light, often more common with rear lights the beam is designed in a way that spreads light out to the sides, manufacturers might give this in degrees, for example, 120° visibility.
The beam pattern of a light can be different, some are more like a spotlight, while others offer a widespread, some even give a combination of the two.
Use our Light Comparison Tool to see the differences in a real-world situation.
Runtime Ranges
Modern low output LED lights last a very long time depending on the mode selected. And entry-level light could have a run time between 1-20 hours depending on mode. The flash mode of a light will give the longest run time, and this is perfect for a busy urban environment where being seen is more important than seeing.
Mid-range lights can last up to 80 hours, more than enough for a commute, and reassuring when you forget to charge or cannot find a USB lead at work.
High-end lights that are larger with hi-tech batteries and bulbs can give thousands of lumen in power for up to 36 hours, these units do cost considerably more, but for riding offroad, or away from street lights the performance is incredible.
To compare popular lights we have made a Light Comparison Tool where we took a range of lights to a very dark cycle path to show the differences.
Commuter/Road Lights
What to look for
If you commute on lit-up city streets, you will need lights to be seen by, rather than to see by. A front light with around 100 lumens should be enough for city commuting, over 400 Lumen will be best if you ride fast or you live in a darker area. Add lumen to your front light requirements up to around 800 for a totally dark cycle path.
The more lights you have, the more visible you will be to traffic so ideally, you should have more than one light with one on flash mode so you are seen clearly at junctions and crossings by other road users. Flashing lights are much easier to see by others especially when it is raining.
Off-road Lights
Ultimate illumination
If you're a mountain biker and want to venture onto the trails after dark, you won't have any street lighting to guide you. That's when super-powerful front lamps with rechargeable batteries come into their own. Lighter units have the battery built into the light body, while the longest lasting and most powerful lights have a separate battery unit attached to your bike, in a bottle cage mount, for instance.
One light on the bars and one attached to the helmet work best. lights in this category tend to have thousands of Lumens. At this High-end the battery technology has vastly improved usage and charging time over cheaper lights. The mounts are designed to cope with the rigours of mountain biking, with lenses that optimise the magnification and spread for trail riding.
Batteries and charging
There are two main power sources for your lights: ordinary batteries such as AA which need replacing when they run out, or those with a rechargeable battery built in. Rechargeable lights used to be far more expensive, but there are now many cost-effective and compact units available which can recharge from your computer with a USB cable.
This makes them a brilliant option for commuters, who can charge them at their office desk during the day.
There are other ways to charge your lights. Dynamo hubs store charge from your rotating wheel. They do require a new wheel to be built but need no power source other than your own legs. Modern dynamo hubs have very minimal drag and are the perfect choice for long distance touring a bikepacking. There are even a few solar power lights for totally carbon neutral cycling!
Technology
The majority of modern front lights use Lithium-ion batteries that give long burn times for relatively short charge time. Most lights have different modes of power including a flash or strobe mode. Higher power modes will use more battery.
The lens has a large effect on the light, though there are variations most will give a spot with a wider but less bright halo around the centre.
Most modern lights especially those designed for off-road use will have a water-resistant rating with an IP number. In brief the larger the number the better protected against water and dust the light will be.
Lights commonly use either clamps or straps/bands to attach. For off-road lighting clamps are common helping the light stay in place over rough terrain, often featuring a quick release system.
Delivery & Guarantee
UK Delivery Information
International Deliveries – Temporarily Suspended 11/11/20
Note: We are still offering deliveries to the Isle of Man, Scottish Highlands, Scottish Islands, Channel Islands, Isle of Wight, Jersey and Guernsey. We are no longer delivering to Northern Ireland.
Courier Delivery update: Due to the COVID19 situation, we are currently experiencing some delays with deliveries. Our couriers are working around the clock to get your order to you as soon as possible but there is a potential delay of up to 48 hours . Please check your tracking on track your order here.
Please download the TNT Track and Trace App for iOS here and Android here so you can keep an eye on your delivery and any further updates.
Please note on the TNT tracking app it may show your delivery status as ‘Collecting’ (as per image below). This means your delivery has left our warehouse and is currently held at TNT main depot and there could be up to a 48 hour delay.
Please keep checking the TNT tracking for further updates. On behalf of TNT we apologise for any delay and inconvenience this may cause.
We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE in the UK, regardless of the size and on all orders over £20.
Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.
Please note that Pre-Order dates can sometimes change due to updated stock information.
Click here for more UK and international delivery information.
Returns & Warranty
It's easy to return a product with our 365 day, hassle free returns.
We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).
Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.
If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.
For more information please visit our Returns & Warranty page.
