Day 4 of Amazon Prime Day 2026 is gasping its final breaths - the sale ends at 11:59 a.m. PDT - and we've been peeking at what our readers have been stuffing into their virtual carts. ZDNET's top-selling items (so far) from June Prime Day 4 are in, and they're exactly what you'd expect: speakers, watches, and a gadget that zaps bug bites because apparently we've had enough of nature.

Here are the top 10 products ZDNET readers purchased, listed by units sold through our links. (Relax, your privacy is intact - we only see aggregate data, not your questionable purchase of a banana slicer.)

Bose's SoundLink Plus speaker is the belle of the ball. Headphone expert Jada Jones calls it the perfect size, with four passive radiators for booming bass and an IP67 rating for poolside accidents. Because nothing says "outdoor soiree" like a speaker that can survive a drop in the water.

The AAWireless Two Plus lets you wirelessly connect Android Auto and CarPlay, with a button to switch between phones. ZDNET Editor-in-Chief Kerry Wan says it's the best wireless Android Auto experience yet. High praise from someone who probably sits in traffic a lot.

Garmin's Fenix 8 Pro, our pick for best Garmin watch, is back. It connects to phones, golf sensors, bike sensors, and probably your toaster if you try hard enough. It has an AMOLED display and an LED flashlight, which reviewer Matt Miller says makes it "an essential tool." It was our top-seller for Prime Day 1 and top-5 for Day 2. Consistency is key.

Prone to bug bites? Heat It is a dongle that zaps itchiness with warmth. Gadget reviewer Adrian Kingsley-Hughes tested it, and I can confirm it works. It's like a tiny, USB-powered revenge on mosquitoes.

Another Garmin, the Fenix 7X Pro Sapphire Solar, is 50% off. It's a premium smartwatch with a 47mm AMOLED display, sapphire face, titanium bezel, and 16-day battery life. Basically a mini computer on your wrist that also tells time.

The AirFly Pro 2, a Bluetooth dongle for planes, is under $50. Expert Jada Jones calls it a travel essential. Because nothing ruins a flight like being tethered to a screen with wired earbuds.

Garmin's Instinct 3 Solar is down to $349, matching its Black Friday price. It's a rugged watch with flagship features, for those who want to track their hikes without selling a kidney.

Anker's Soundcore Boom 2 speaker has party lights, 24-hour playtime, and floats. Yes, floats. So you can drop it in the pool and retrieve it like a tech-savvy retriever.

JBL's Charge 6 speaker packs Auracast, USB-C reverse charging, lossless audio, and 28 hours of playtime. It's IP68-rated, meaning it can survive a dip longer than your phone. Also 20% off, because savings.

So there you have it: speakers, watches, and bug-zappers. Prime Day: where consumerism meets questionable necessity.