The DAYARC Mini is a compact bright-light lamp rated at 10,000 lux at approximately 25 cm, with one brightness setting, 3,000 K warm-white LEDs, a folding stand that doubles as a protective cover, and mains power with no battery. It costs £49.99 and is built for smaller spaces and mornings away from home. This post goes through each of those choices, and what a lamp this size can and cannot do.
What should a compact bright-light lamp actually do?
A bright-light lamp, sometimes called a SAD lamp or light box, has one job: to put a known amount of light in front of your eyes at a distance you can realistically sit. (SAD is seasonal affective disorder, a form of depression with a seasonal pattern.)
That amount of light is measured in lux, which is simply how much light arrives at a surface. The figure used in most research on light boxes is 10,000 lux, and a lamp only delivers its rated figure at its rated distance. Move further away and the light reaching you falls off quickly. We explain this in what 10,000 lux actually means.
So a compact lamp should state both numbers plainly. The Mini is manufacturer-rated at 10,000 lux at approximately 25 cm. That is close, about the distance to a book held in front of you, and the whole design is built around it. Distance is part of the specification.
How far should you sit from the DAYARC Mini?
About 25 cm for a 30-minute session is the manufacturer's starting point. Because the light reaching you drops as the distance grows, the guidance pairs a longer session with a greater distance.
| Distance from the panel | Suggested session length | In practice |
|---|---|---|
| About 25 cm | 30 minutes | Lamp on the table directly in front of you, just above eye level |
| Roughly 35 cm | 60 minutes | Lamp at the far edge of a small desk |
| Roughly 50 cm | 120 minutes | Lamp across a breakfast table; a long, gentler session |
These are manufacturer guidance figures, not medical instructions. For most routines, 25 cm and 30 minutes is the practical starting point because it fits before work. Our post on how far to sit from a light therapy lamp covers the trade-offs.
At 25 cm, small movements matter more than they do with a big panel: leaning back in your chair can take you 10 cm further away without you noticing. A placemat or a strip of tape on the desk keeps the distance honest.
Why does the stand double as a cover?
The Mini's panel is roughly 23 × 13 cm and the whole lamp weighs about 0.7 kg. A lamp that small will spend time in bags, drawers and suitcases, so the stand is a folding hard-plastic piece that closes over the panel when you are not using it.
Opened out, the stand holds the panel at a few fixed tilt angles rather than on a free-sliding hinge, so you set it up the same way each morning and it stays there. You can stand the lamp in portrait or landscape, which helps on a narrow shelf or a hotel bedside table.
There is no separate case to lose: fold, pack, unfold.
Why is the DAYARC Mini mains powered, with no battery?
The answer is about physics rather than cost.
A panel bright enough to reach 10,000 lux at 25 cm draws far more power than a small, light battery could sensibly supply for a 30-minute session every day. A battery big enough to do the job would make the lamp heavier, thicker and dearer, and it would still need charging every night.
Mains power keeps the Mini light, simple and dependable: plug it in and it is at full brightness immediately, with no battery to age. If you want a lamp for a garden bench or a train seat, this is not it, and we would rather say so.
Why 3,000 K warm-white LEDs?
Colour temperature, measured in kelvin (K), describes how warm or cool white light looks: lower numbers are yellower, higher numbers are bluer. The Mini uses 3,000 K warm-white LEDs, while DAYARC Rise uses 4,000 K neutral white.
We chose warm white because of where the Mini will be used: small rooms, close range, often before sunrise. At 25 cm a cool, blue-white panel can feel stark first thing; warm white is easier to sit beside over coffee.
Brightness is a matter of lux, not kelvin. White light at 3,000 K still contains the shorter wavelengths that the eye's clock-sensing cells respond to, which is what signals "morning" to your body clock, the internal timer that runs your daily rhythm. We go into the detail in 3,000 K vs 4,000 K: does colour temperature matter? Like Rise, the Mini uses UV-free LEDs, in line with the NHS advice to choose a UV-free lamp and follow the manufacturer's instructions.
What are the DAYARC Mini's limits, and who should look at Rise?
Worth knowing before you order:
- One brightness setting. There is no dimmer. If a session feels too bright, sit a little further away or keep it shorter, rather than looking for a lower mode.
- No timer. The Mini does not switch itself off. A phone timer or a kitchen timer does the job. Rise has a built-in 15, 30, 45 or 60-minute timer with auto-off.
- A smaller usable zone. A 23 × 13 cm panel at 25 cm gives you less room to move than a large panel at arm's length. You need to sit closer and stiller.
- Mains only. A socket near your usual seat is part of the setup.
- Not a sunrise alarm clock, and not a red-light device. The Mini is a bright white light for the morning, nothing more.
None of these are faults. They are the trade-offs that make a lamp this size, at this price, possible.
Rise is the better choice if you will use the lamp in one fixed place every morning, want a lower setting on some days, or would rather not rely on a phone timer. It is rated at 10,000 lux at approximately 30–36 cm, has four brightness settings, a large panel of roughly 40 × 33 cm and adjustable height and angle, and costs £199. The full head-to-head is in DAYARC Rise vs DAYARC Mini.
Frequently asked questions
Is the DAYARC Mini battery powered?
No. The Mini is mains powered and has no battery. A panel bright enough for 10,000 lux at 25 cm would drain a small battery quickly, so mains keeps the lamp light and simple.
How far should I sit from the DAYARC Mini?
About 25 cm for a 30-minute session, following the manufacturer's guidance. Roughly 35 cm suits a 60-minute session and roughly 50 cm a 120-minute one. Keep the panel slightly above eye level, angled towards you.
Can I take the DAYARC Mini abroad?
Check the rating printed on the supplied power adapter against the mains supply where you are going, and use a suitable plug adapter. If you are unsure, contact us before you travel.
Does the DAYARC Mini have a timer?
No. Set a timer on your phone or use a kitchen timer. If you want a lamp that switches itself off, Rise has a built-in 15, 30, 45 or 60-minute timer.
Where does this leave you?
If your mornings happen at a small desk, in a shared flat or in a different hotel each week, the DAYARC Mini is the lamp we designed for you: £49.99, about 0.7 kg, and it folds into its own cover. If you have a regular place at the kitchen table and want brightness settings and a timer, look at DAYARC Rise instead. Both are in stock in the UK and dispatched within 2 working days, with 30-day change-of-mind returns and a 1-year warranty.
About DAYARC
DAYARC is a new UK circadian rhythm startup. We make two bright-light lamps for the morning: DAYARC Rise (£199), a full-size lamp rated at 10,000 lux at approximately 30–36 cm, with four brightness settings, a 15 to 60-minute timer and adjustable height and angle; and DAYARC Mini (£49.99), a compact lamp rated at 10,000 lux at approximately 25 cm, with a folding stand that doubles as its cover. Both use UV-free LEDs and run from the mains. We publish plain specifications with the measuring distance, we do not make medical claims, and we write the DAYARC Journal to help people build a simple morning light routine around their own daily rhythm. Both lamps are in stock in the UK and dispatched within 2 working days. You can read more about how we think on our approach page or compare the two lamps.
This article is general information, not medical advice. Check with a GP or qualified healthcare professional before using bright light if you have an eye condition, a condition affected by bright light such as bipolar disorder, or take medicines that increase sensitivity to light. If you have persistent low mood or think you may have depression, speak to your GP. If you or someone else is in crisis, call NHS 111 or, in an emergency, 999.