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White rectangular digital alarm clock with semi-transparent 4.5 inch LCD screen and 1.3 inch display showing time

Cadmos G21 Digital Alarm Clock White 105dB 4.5in 1.3in Display 8 Colors 4 Brightness USB Battery

SKU CH-1CQ6-3G4Y7 MPN G21

Loud 105 dB alarm with 4.5 in semi-transparent display, 8 night-light colours, 4 brightness levels and USB or battery power

  • Color familyWhite
  • Product typeDigital
  • Size or dimensions5.3 in × 1.5 in × 4.9 in
  • Color and finishWhite
  • Extra-loud 105 dB alarm wakes heavy sleepers
  • 8 night-light colours with 4 brightness levels suit any mood
  • 5 in semi-transparent LCD and 1.3 in digits read clearly at a glance
  • USB power keeps display on constantly; AAA backup retains time during outages
  • Dual alarms, 12/24-hour format, DST adjust and 9-minute snooze cover daily routine

Digital alarm clock with loud 105dB alarm

The Cadmos G21 is a digital alarm clock designed for bedside or desk use. It features a large 4.5 inch LCD screen with a semi-transparent design and a 1.3 inch digital display. The alarm reaches a maximum volume of 105dB and includes a dual-alarm function. It is powered by an included USB adapter or three AAA batteries as backup.

Suited for heavy sleepers and colour-light fans

The extra loud alarm and dual setting help heavy sleepers and adults wake reliably. Eight colour options with four brightness levels provide a customisable night light for teenagers and children. Buyers who need a projection display, radio playback, or smart-home connectivity will not find those functions here.

105dB maximum alarm volume

The single specification that decides suitability is the 105dB maximum alarm volume. This output level targets users who struggle to wake with standard alarms. If a quieter wake-up signal is preferred, this model exceeds that requirement.

How it compares

Measured against everything we stock in Wall & Alarm Clocks, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 87% of the 764 comparable items (median $30.99).

Specifications

Product
Brand nameCadmos
Model nameG21
Product typeDigital
Color and finishWhite
Color familyWhite
Size & build
Size or dimensions5.3 in × 1.5 in × 4.9 in

Questions about this item

How can I confirm the alarm is loud enough for a heavy sleeper after I set it up?

Set the alarm and verify the volume reaches the stated 105dB maximum; the dual‑alarm function is designed for heavy sleepers and adults.

What comes in the box and what must I provide myself?

The clock and a USB power adapter are included; three AAA batteries for backup operation are not included and must be purchased separately.

Which display size should I choose for bedside readability?

The unit has a single 4.5‑inch LCD screen with a 1.3‑inch digit area; there are no alternative display sizes for this model.

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