hooga Amber Book Light, Rechargeable Clip-On Blue Light Blocking LED Reading Light, 1600K Warm Eye Care for Bed, Students, Kids, Travel, Nursing, Studying

The hooga amber book light does one thing. It gives out a single 1600K amber color, close to candlelight, for reading at night. It costs about $13 and has a 4.7-star average from around 16,000 reviews on Amazon.

What you get

Hooga says the light is 99.94% free of blue-spectrum light. There's no white or cool setting at all. You get three brightness levels, a 360-degree gooseneck and a clip the company describes as strong and sturdy. It weighs 2.5 oz.

The 1200mAh lithium battery is bigger than most clip-on lights have. It charges over micro-USB (a 3 ft cable is included), not USB-C. Hooga is a small US company and offers a 30-day return window.

The trade-off

Amber light makes text less crisp than warm white, especially on cream or yellowed pages, and some readers find it tiring over long sessions. Whether amber reading light helps you fall asleep faster than a dim warm-white light hasn't been well studied. What's well established is that bright, blue-rich light in the evening suppresses melatonin. A dim amber light is a sensible choice if you want to keep evening light as low-blue as possible.

Who it's for

• Night readers who want the warmest light they can get
• Parents doing night feeds or checking on kids, since the light is dim and warm
• People who've already moved to amber bulbs or glasses in the evening

Who should skip it

If you also want a normal white light for daytime or for reading small print, the Glocusent clip-on has an 1800K amber mode plus two whiter settings.

Alternatives

The Gritin 9 LED costs about $10 with stepless dimming but no amber mode. The Glocusent neck light is hands-free. All four are compared in our best book light for reading in bed guide. For the research on blue light and sleep, see do blue light glasses work and screen time and sleep.