Room-Filling Sound Bluetooth Speaker

[Format] Professional e-commerce product main image, square 1:1, premium audio-tech advertising style with a glowing podium and cool blue-violet gradient stage. [Colors] A deep blue-to-violet gradient background (#2a3f8f to #6a4fc0 ranges) with soft light beams behind the product. Accents are white, silver mesh and champagne cream. No frame border. [Layout] The speaker stands centre-right on a round white podium ringed with soft glow. The two-line headline fills the upper left with a small sub-line beneath, three dark check pills stack below it, and a bottom band carries the launch price and voucher note. [Subject] No people. A cone-shaped smart speaker with a smooth white upper shell, a fine silver fabric mesh lower half, and small grey lettering on the front, lit by a soft violet rim light from behind. [Headline] Upper left: "Room-Filling Sound" in very heavy white caps, then "Clear and Crisp" in equally heavy caps. A small white sub-line: "Minimal, Versatile, Stylish Bluetooth Speaker". Three charcoal pills with white checks: "Deep Bass Surround Effect", "Pairs with All Your Devices", "96-Hour Super-Long Standby". Bottom: a cream section with small red text "Launch Offer" over "$199.9" in huge red numerals; a dark band with small white caps "Official Authentic + Nationwide Warranty" above bold white "Follow the Store for a $100 Voucher". [Mood] Sleek, musical and stage-lit; violet-blue spotlight drama with creamy price warmth.