This hour's deals
−45%
Tech · Greentoe
A speaker loud enough to start the block party
JBL PartyBox 310 Portable Party Speaker
JBL's PartyBox 310 portable party speaker for backyard bashes and tailgates that need serious sound.
Deal score 7.5 · Steal
$394.55$715.00 Greentoe's regular price
You save $320.45 at Greentoe
Checking it's still available…
Why it's a great deal
- Elsewhere right now: BrandsMart USA $499.95, Zaytoun Solutions $543.79, Safe and Sound $549.95, and 3 more (typical $564.95 across 6 stores)
- Cheaper than all 6 other stores selling it right now
- Greentoe lists its regular price at $715.00: 45% off by its own figures
- Rated 4.8 out of 5 by 5,400 buyers
Every store we checked
- GreentoeNew
In stock
$394.55Observed at 3:38 PM - BrandsMart USANew
In stock
$499.95Observed at 3:38 PM - Sunshine PhotoNew
In stock
$499.95Observed at 3:38 PM - Zaytoun SolutionsNew
In stock
$543.79Observed at 3:38 PM - Safe and SoundNew
In stock
$549.95Observed at 3:38 PM - eBayNew
In stockSold by onecall
$579.95Observed at 3:38 PM - WalmartNew
In stock
$579.95Observed at 3:38 PM - JBLNew
In stock
$579.95Observed at 3:38 PM - Harman AudioNew
In stock
$579.95Observed at 3:38 PM - Newegg.comNew
In stockSold by Onecall (Authorized Dealer)
$579.95Observed at 3:38 PM - Best BuyNew
In stock
$579.95Observed at 12:38 PM - SearsNew
In stockSold by Tekcom Shop USA
$759.14Observed at 3:38 PM - 961smartrontex.comNew
In stock
$850.00Observed at 3:38 PM - eBayPre-owned
Availability unknownSold by onecall (99.8% positive, 57,400 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$349.97Free shippingObserved at 3:38 PM - SweetwaterPre-owned
Availability unknown
$400.00Observed Oct 31, 2026, 10:56 PM - eBayRefurbished
Availability unknownSold by brandsmartusa (99.5% positive, 37,700 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$435.73Free shippingObserved at 3:38 PM - Little FashionNew
Availability unknown
$449.00Observed Nov 4, 2026, 3:11 AM - Mojo Cameras and ComputersNew
Availability unknown
$499.95Observed Nov 1, 2026, 12:16 PM - AmazonNew
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
$499.95Observed Oct 31, 2026, 9:47 PM - Reebelo USANew
Availability unknown
$526.99Observed Nov 2, 2026, 9:13 AM - idjnowNew
Availability unknown
$549.95Observed Nov 3, 2026, 12:12 PM - ubereats.comNew
Availability unknown
$579.95Observed Nov 6, 2026, 9:37 PM - eBayNew
Availability unknown
$1,127.68Observed Oct 31, 2026, 10:56 PM
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From Greentoe
- Bluetooth wireless technology
- Up to 240W RMS output
- 18-hour rechargeable built-in battery
- 2x 6.5" woofers and 2x 2.5" tweeters
- 1/8", 1/4" mic and 1/4" mic/guitar inputs
- USB playback and device charging
- Guarantee
- Authorized retailers; manufacturer warranty included; every product is brand new and warranty-backed from authorized retailers.
- Returns
- 30-day return policy (minimum return policy).
- Shipping
- Free shipping on most items; most orders ship within two business days.
- In the box
- JBL PartyBox 310 Portable Bluetooth Speaker with Party Lights, AC Power Cord, Limited 1-Year Warranty
What buyers say
Buyers like
- Great bass, loud and clear sound
- Sturdy build and easy to move with wheels
- Long battery life, keeps playing through power outages
- Mic and guitar inputs work well
- Party lighting adds fun
- JBL app helps with EQ and pairing two speakers
Buyers complain about
- Lights not perfectly in sync with the music
- Wants EQ adjustments and steady-on light option in the app
- Wants brightness control for the lights
- Top-end clarity could be better than pricier setups
Specs
- Outdoor
- Yes
- Bluetooth
- Yes
- Connectivity Technology
- Bluetooth, Wireless
- Ports And Interfaces
- Guitar input, Microphone input
- Wi-Fi
- No
- Assistant Support
- No voice assistant capabilities
- Smart Functions
- App-controlled
- Speaker Placement
- Portable
- Design Highlights
- Portable
- Material
- Plastic
About the JBL PartyBox 310 Portable Party Speaker
The JBL PartyBox 310 is a large portable party speaker with 240W of output, a 6.5-inch woofer and rear passive bass plate, and built-in wheels and a handle for moving it around. It runs on battery or AC power, has Bluetooth, a mic input and a guitar input, and is splashproof for outdoor use. At $434.95 at Harman Audio as of November 6, 2026, it sits well above its recent low of $394.81 on November 5, 2026, so this is not the cheapest it has been lately.
Best forHosts of backyard parties and cookoutsDJs and performers who need battery-powered soundKaraoke and mic or guitar usersBuyers who want one loud speaker instead of a full PA
Pros
- Very loud for its size: 240W with a 6.5-inch woofer and passive bass plate
- Runs on battery or AC, so it works away from outlets
- Mic and guitar inputs make it usable for karaoke and small performances
- Splashproof build suits poolsides and patios
- Wheels and a telescoping handle make the 17.4 kg weight manageable
