The Turtlebox Grande is the brand's biggest, loudest speaker — built to fill the widest open spaces and outlast the longest days. Tailgate, job site, branding pen, sandbar, or back porch, the Grande throws concert-level volume (a genuine 126 decibels) and keeps the music going for 40+ hours on a single charge. It's engineered for the places other speakers don't survive. The Grande carries an IP-67 rating — fully waterproof in fresh or saltwater, dustproof, and buoyant, so a tumble off the boat is no big deal. It's drop-proof and crush-proof too, with stainless steel tie-downs, rubber feet, and a pro audio mount so you can strap it down, mount it up, or toss it in the truck and go. Want to go bigger? Party Mode wirelessly pairs an unlimited number of Turtlebox speakers — Grandes, Gen 3 Originals, Cubs, and Rangers — for true surround sound, or run two in classic left/right stereo with TWS. Bluetooth 5.4 keeps the connection locked in from across the yard, and a USB-C port lets you top off your phone while the playlist rolls. (Note: Party Mode is not compatible with Gen 2 speakers.) Highlights Turtlebox's largest, loudest speaker — 126 dB of concert-level sound IP-67 waterproof (fresh & saltwater), dustproof, and floats 100% drop-, crush-, and dust-proof 40+ hours of battery life on a single charge Party Mode & TWS — pair unlimited Turtlebox speakers or run true stereo Ideal for groups of 1–100 people Pro audio mount + stainless steel tie-downs Audio & Tech Specs 2 Class D digital amplifiers with enhanced DSP tuning 1.25" titanium tweeter + 10" woofer 126 decibels max output Bluetooth 5.4 connectivity Touch controls: Party Mode, TWS, play/pause, next, volume 158Wh lithium-ion battery USB-C out for device charging · built-in microphone port IP-67: submersible to 3 ft for 30 min (keep the port cover closed around water) Dimensions Height: 14" · Width: 14" · Depth: 8.4" Weight: 18.8 lbs What's Included Turtlebox Grande speaker Charging cable Warranty Backed by a 1-year manufacturer warranty.