GembaRed Calm Red LED Clip Book and Reading Light

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  • Regular price $39.00
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The GembaRed Calm is finally the solution for a Red battery-powered book light!

With the Calm Red LED book light is the ultimate reading light for sleep and circadian rhythms!

- Calming red/orange 630nm LED lights.

- Built-in battery powered light and easy recharge with USB connector.

- No Flicker or EMF by using a stable DC battery!

- Silicone goose-neck for easy adjustments.

- Large lighting area.

- Three different brightness settings to customize your experience.

- Large strong clip to attach to a book, side of a desk, or bed headboard.

- Large base to stand itself easily on a desk or bedside table.

The GembaRed Calm is finally the book-light for reading at night! It covers a large area with gentle diffuse red light. There is minimal glare and great contrast with our 630nm LEDs! Perfect for easy and comfortable reading at night to prepare for a good night's sleep.

Most other "Amber" or "Low-Blue" reading lights will still have a trace of blue and a bunch of green in them! Our GembaRed Calm is the first book-light that is only Red! This makes it optimal for avoiding melatonin suppressing blue and green lights!

Note: This is our extra-large clamp light that delivers more brightness which is important if this is your first red reading light. If you want a smaller, more convenient unit then get our Calm Mini in this link.


Wattage: 3W LED

LEDs : 12


Specified Wavelength: Red 630nm

Actual Peak (3rd party measured): Red 639nm

GembaRed Calm Spectrum Analysis


Highest Setting: 5200 Lux Emitted, ~2 Lux at reading distance

Middle Setting: 3000 Lux Emitted, ~1.4 Lux at reading distance

Lowest Setting: 800 Lux Emitted, ~0.6 Lux at reading distance


- LED Length ~ 2.7 inches

- Gooseneck Length ~ 8.5 inches

- Base Dimensions ~ 4.5 x 1.6 x 2.4 inches

- Weight ~ 0.4 lbs

Warranty: 2 Year Limited Warranty


- Capacity - 800mA

- Usage Time: 5 hours at lowest setting, 3 hours at highest setting

- Recharge Time: 2.5 hours

- Recharge via USB cable - 5V, 1 Amp recommended

- Estimated Life: 50,000 hours

* Charge the battery to full upon receipt. Do not "top off" the battery and only recharge as needed to help promote a long battery life. *

Whats included?

- GembaRed Calm Red LED Book Light

- USB connector

Made In China


Shipping within the USA is FREE! Please allow 4-7 business days processing time to ship, and an additional 2-11 business days for delivery depending on the location.

We do not currently ship internationally at this time.


Customer Reviews

Based on 24 reviews
Love the long battery life and three intensities of red light

Love it. Perfect for reading in bed at night

Excellent red light

I bought this clip light and the smaller one from Gembared. This one is larger than the smaller clip light. It has a base so it can be used on a desk or any flat surface, it's a bit big to clip on a book, but if you need more light, this is great. I would consider it an easy portable red light you can travel with and really use for many different uses. It is quite stout and sturdy, I highly recommend it, along with the small clip light, they are both fantastic, just have slightly different uses, and knowing it is healthy red light is worth it. Gembared and the blog is just such a great place to learn about light and the impact it has on us humans. 5⭐

Todd Wallace

Soothing light, big sturdy clip.

Angela Danielson
Great product

Excellent customer service!

Aliza Schakler
Clip on night/ reading lights

I really love them! I use them as night lights in my bedroom and read with them. Caution though i kept one as I fell asleep for several hours and there was a weird smell.. That being said I still love them,, Just dont keep them on so long