Storage varies a lot based on file type, resolution, and compression. As a quick guide:

• Photos: Compressed JPEGs from common cameras can number in the thousands, while uncompressed or RAW images may drop to the hundreds or low thousands.
• 1080p video: Typically several hours at moderate bitrates. Higher bitrates, higher frame rates, or advanced codecs reduce total time.
• 4K video: Significantly less time than 1080p due to higher data rates.
• Security or dash cams: Continuous recording fills faster than motion-only clips; most devices loop-record when full.

To estimate: check your device’s average file size (or video bitrate) and divide the card’s capacity by that figure. Results can differ by settings, so your device’s storage meter is often the most reliable indicator.

Compatibility depends on the specific model, so it’s best to confirm in your camera’s manual. For a 32GB option, many home cameras use the following:

• Form factor: microSDHC for 32GB capacity.
• Speed class: Class 10/U1, UHS-I (often labeled V10) is commonly suitable for Full HD recording; if your camera supports higher bitrates, a higher video class can be helpful.
• Endurance: Cards marketed for continuous recording can offer more consistent performance for 24/7 use.
• Formatting: Format the card in the camera so it uses the expected file system.

Before buying, verify the maximum supported capacity and recommended speed class in your device documentation. Using your device’s in-menu format can help with reliability.

Since specifications vary by model, check your device’s manual for exact requirements. For a 32GB card used in many smart cameras, here are practical guidelines:

• Type: microSDHC for 32GB, unless your device specifically requires full-size SD.
• Speed: Class 10/U1, UHS-I supports Full HD recording in many devices; if your camera uses higher bitrates, a higher video speed class may help.
• Endurance: A card designed for continuous or loop recording can be beneficial for always-on capture.
• Setup: Format the card in the device, and avoid removing power while it’s writing.

If you want longer local video retention than 32GB provides, check the maximum capacity your device supports and choose accordingly.

The exact requirements can differ by model, so confirm in your camera’s manual. For a 32GB local storage setup, useful considerations include:

• Form factor: microSDHC for 32GB cards in most compact cameras.
• Speed class: Class 10/U1, UHS-I (often V10) is typically suited for Full HD recording.
• Reliability: Cards designed for continuous recording can offer more consistent performance.
• Environment: If used outdoors, check the card’s operating temperature range.
• Care: Format the card in-device, eject safely, and consider periodic reformatting to maintain performance.

Recording mode matters: motion-only capture uses less space than continuous recording, which can help extend how long 32GB lasts.

Match the card to your device’s slot. Here’s how to choose:

• Card size: SD is the larger, credit-card–style form; microSD is the smaller, fingernail-sized version used by most compact devices.
• Adapters: A microSD can be used in SD slots with an adapter, but an SD card won’t fit a microSD-only slot.
• Capacity class: 32GB cards are typically SDHC or microSDHC.
• Speed class: Look for Class 10/U1, UHS-I (often V10) for Full HD video; higher video classes can help with higher bitrates.

On Walmart, you can use filters to select SD or microSD and the capacity you need, then check your device’s manual to confirm compatibility.