A21 4K Indoor Security Camera, Smart Clock Hidden Camera with Review

Name: A21 4K Indoor Security Camera, Smart Clock Hidden Camera with
Brand: A21
SKU: B0H1SJKK8T
Price: 52.79 USD
Availability: InStock

By Marcus Lowe · Feeding and nursery writer · Published 2026-04-27 · Updated 2026-06-16

5.0 (8) Amazon rating$52.79100+ bought last month

Our verdict

The A21 A21 is a monitor. At $52.79, it currently holds a 5.0 star rating from 8 owners, so our read leans on the measured specifications rather than long term reports. Full capacity, dimensions and configuration are listed in the specifications below.

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Weight 0.33 Pounds
Resolution 4k
Night Vision Thermal Sensing
Connectivity Wireless
Power Battery Powered

Our scorecard

4.1/5 overall

Owner rating5.0/5

5.0 average across 8 owner ratings
Popularity0.2/5

8 owner reviews, fewer than most models here

The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other baby gear and nursery essentials we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.