Image Sensor: 1/2.8″ 2-Megapixel Progressive Scan CMOS Sensor.
Max. Resolution: 1920 × 1080 (1080p Full HD).
Lens: 4mm @ F1.6
- Field of View: $10 0^{\circ}$ (Diagonal), $8 5^{\circ}$ (Horizontal), $4 6^{\circ}$ (Vertical). This provides a good wide view for typical indoor scenarios.
Minimum Illumination: 0.1 Lux.
Night Vision: Up to 5m (16 ft) IR (Infrared) Night Vision.
DNR (Digital Noise Reduction): 3D DNR.

Video & Audio:

Video Compression: H.265 / H.264. H.265 is more efficient for storage and bandwidth.
Frame Rate: Max. 15fps; Self-Adaptive during network transmission.
Max. Bitrate: 1 Mbps.
Two-Way Talk: Supported, with a built-in microphone and loudspeaker, allowing for real-time communication.

Network:

Wi-Fi Standard: IEEE802.11b, 802.11g, 802.11n (2.4 GHz frequency range).
No Wired Network Port: This camera relies solely on Wi-Fi for data transmission.
Wi-Fi Pairing: AP pairing (for simple initial setup).
Security: 64/128-bit WEP, WPA/WPA2, WPA-PSK/WPA2-PSK.

Functions & Features:

Battery-Powered: Built-in 2,000 mAh rechargeable battery.
- Battery Life: Up to 50 days on a full charge (actual battery life varies significantly based on factors like motion detection frequency, live view usage, recording duration, and Wi-Fi signal strength).
Smart Alarm: AI-Powered Human Motion Detection. This helps to differentiate human figures from pets or other moving objects, reducing false alerts.
Customized Alert Area: Allows you to define specific zones within the camera’s view for motion detection.
Palm-Sized Camera: Extremely small and discreet design, allowing it to blend into various home décors.
Magnetic Base: Features a strong magnetic base for easy and flexible installation on metallic surfaces, or use with the included metal plate for other surfaces.
Smart Integration: Compatible with Google Assistant and Amazon Alexa for voice control.

Storage:

Local Storage: Supports microSD card (up to 512 GB). This is a generous capacity for a camera of this size.
Cloud Storage: Supports EZVIZ CloudPlay storage (subscription required).

General:

Operating Conditions: $- 1 0^{\circ} C$ to $4 5^{\circ} C$ ( $1 4^{\circ} F$ to $11 3^{\circ} F$ ), Humidity 95% or Less (Non-condensing). Important: This is an indoor camera, NOT rated for outdoor use.
Power Supply: DC 5V/1A (via USB, power adapter typically purchased separately).
Dimensions: $50.5 \times 39.1 \times 39.1 mm$ ( $1.99 \times 1.54 \times 1.54 inch$ ). This makes it exceptionally small.
Net Weight: 86.8 g (3.06 oz).

Note on EZVIZ CB2 4G (Model: CS-CB2-R105-1K3F4GA):

There is also a 4G LTE version of the CB2. Key differences include:

Connectivity: Supports 4G LTE cellular network connectivity (requires a SIM card and data plan), making it ideal for locations without Wi-Fi.
Resolution: Often 2K ( $2304 \times 1296$ or 3MP).
Night Vision: May have a slightly longer IR night vision range (e.g., up to 8m / 26ft).
Battery: Still 2000 mAh, but “Always-On Video Mode” is a feature, which might impact battery life depending on usage.
Weight: Slightly heavier at 90g bare weight.

EZVIZ CB2 – Wi-Fi Smart Home Battery Camera