Amazon Electronics for Sale

Handy for anyone tinkering with RF circuit design or filter prototyping, since tuneable BAW resonators let you adjust frequency response without swapping components entirely. That's $22.62 off the list price, about 21% below retail. Buy Now at Amazon

Small precision mirrors like these suit hobbyists working on optical or laser projects who need multiple units on hand rather than a single piece, and at $87.37 you're paying $22.62 less than the $109.99 list price. Buy Now at Amazon

Anyone who spends a lot of time on conference calls out of the office will appreciate having a dedicated speakerphone rather than relying on laptop mics, and the compact, portable build makes it easy to toss in a bag for meetings on the go. Buy Now at Amazon

Keeps your battery locked in place so vibration and rough roads don't cause it to shift or work its terminals loose over time, a small fix worth having if you've dealt with a rattling or wandering battery before. Buy Now at Amazon

Anyone prone to dropping their phone face-down will get the most out of this, since the tempered glass takes the impact instead of your screen, and having two in the pack means a backup once the first one takes a hit. Buy Now at Amazon

Handy for garages or workshops where extension cords end up in a tangled pile, this keeps them looped and hung neatly on a hook or wall, and it's $2 off the list price at Amazon. Buy Now at Amazon

Update: The price has changed to $19.99 since this was originally published.

Handy for anyone who wants to charge a phone, watch, and earbuds in one spot on a nightstand or desk, with a built-in night light as a nice bonus for bedside use; the price is essentially unchanged from list at just a penny off. Buy Now at Amazon

Update: The price has changed to $19.99 since this was originally published.

Cold commutes, outdoor sports, or job sites where you can't wear gloves all day are where these earn their keep, since they recharge via USB instead of relying on disposable heat packets; at $20, it's only 45 cents off list, so this one's about convenience more than savings. Buy Now at Amazon

Update: The price has changed to $22.99 since this was originally published.

Anyone juggling an iPhone, Apple Watch, and AirPods on a nightstand will appreciate having all three charge from one compact pad instead of three separate cables, and it's currently $3.75 off the $25 list price. Buy Now at Amazon

Update: The price has changed to $21.99 since this was originally published.

Charging three devices at once from a single compact block suits anyone tired of hunting for outlets or juggling multiple bricks, and at $21.24 it's $3.75 off the $24.99 list price. Buy Now at Amazon

Update: The price has dropped to $16.13 since this was originally published.

This reflector suits anyone maintaining or building out industrial automation setups, since it's a direct replacement part for retro-reflective photoelectric sensors rather than a standalone sensor. At this size, it's meant for tight mounting spots where a compact reflector target is needed. Buy Now at Amazon

Update: The price has changed to $31.99 since this was originally published.

Handy for travelers or anyone who drains their phone battery before the day's over, since 30,000mAh can recharge most phones several times over, and it's $5 off the list price at Amazon. Buy Now at Amazon

Update: The price has changed to $59.99 since this was originally published.

Setting up a smart home starts easy with this light stick, since it doesn't require a hub and works straight through your existing WiFi, good for anyone dipping a toe into smart lighting without extra hardware. At $59.98, that's $20 (25%) off the $79.99 list price. Buy Now at Amazon

Update: The price has dropped to $46.99 since this was originally published.

Backyard bird watchers get automatic species identification and motion-triggered photos without running a power cord out to the feeder, since the solar panel keeps it charged. The discount here is minor, just $1 off the $48 list price. Buy Now at Amazon

This ring works well for anyone curious about sleep and heart rate trends without wearing a bulky wrist tracker, and at $47.58 it's $8.40 off the $55.98 list price. Buy Now at Amazon

Anyone curious about sleep tracking or heart rate monitoring without wearing a bulky watch might prefer this ring format for overnight comfort, and it's currently $8.40 off the list price at Amazon. Buy Now at Amazon

This mount suits anyone with a MagSafe-compatible phone who wants hands-free charging on the go without fumbling for cables, and includes a 36W adapter for faster charging in the car; it's $4 off the list price at $22.94. Buy Now at Amazon

Tracks sleep and activity without the bulk of a smartwatch, making it a fitting option for anyone who wants basic health data without wearing something on their wrist. Amazon has it for $47.58, which is $8.40 off the $55.98 list price. Buy Now at Amazon

Handy for anyone switching between two HDMI devices, like a laptop and a streaming box, on a single monitor or TV without unplugging cables each time. It's $3 off the list price at Amazon, bringing it to $9.99. Buy Now at Amazon