How to Choose a Bedside Lamp: Height, Brightness and Warm Light for Sleep
A good bedside lamp is bright enough to read by, warm enough to wind down under, and easy...
Read the guide

A moon from any USB port
Bendable 28 cm arm aims the moon at wall or ceilingFocused glass lens keeps crater detail crisp at 1 m wideRuns on any USB port, adapter or power bank — 5 V safe
Aluminium gooseneckABS + PC headGlass projection lens
We're here to help
Frequently asked questions
How big is the projected moon?
About one metre across from 2–3 metres away. Move the head closer for a smaller, sharper disc, or further back for a bigger, softer one.
What powers it?
Any USB-A port: a phone charger, a power bank, a laptop or the USB port on many bedside lamps. It draws safe 5 V power; no batteries inside.
Can I point it at the ceiling?
Yes — the gooseneck holds any angle, so it works on walls, ceilings and sloped attic rooms alike. Ceiling projections are the favourite for reading in bed.
Does it get warm?
The small head warms with use, like most projectors. Switch it off when you leave the room and give it a break after around five hours of continuous use.
Is it only the moon?
We stock the warm golden moon only — it matches the soft, candle-warm light CalmEden rooms are built around.
Is it safe for a child's room?
It runs on low-voltage 5 V USB power. Place it out of small children's reach — on a shelf or behind the headboard — and switch it off after bedtime.
From the journal
The Sleep Journal
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How to Choose a Bedside Lamp: Height, Brightness and Warm Light for Sleep
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