Dual Woofer Wireless Outdoor Audio System

Core Sound Performance

At the heart of the CS-0821 lies an 8-inch high-performance driver unit, paired with a peak output power of 40W, designed to deliver rich, room-filling sound with deep bass, clear mids, and crisp highs. Unlike compact speakers that struggle with outdoor acoustics, the CS-0821 is tuned to cut through ambient noise, ensuring your music stays loud and balanced even in open spaces. Whether you're playing bass-heavy EDM tracks, soulful acoustic ballads, or upbeat pop hits, the speaker's audio profile brings every genre to life with stunning clarity.

For even more powerful sound, the speaker supports TWS (True Wireless Stereo) pairing, allowing you to connect two CS-0821 speakers wirelessly for true left-right stereo separation. Double the volume, double the bass, and create a surround-sound experience that transforms any space into a mini concert hall.

All-Day Outdoor Ready Battery Life

Never let a dead battery kill your vibe. The CS-0821 is powered by a high-capacity 7.4V 3600mAh lithium-ion battery, built to deliver reliable performance wherever you go. On a full charge, the speaker offers 2–3 hours of continuous playtime at full volume, perfect for extended parties or day-long outdoor adventures.

When it's time to recharge, the speaker features a Type-C fast charging port, compatible with most modern chargers, power banks, and car adapters. Fast charging support means you can quickly top up the battery before your next event, eliminating long wait times and keeping the music playing nonstop. The built-in battery is also designed for safety and longevity, with overcharge and over-discharge protection to ensure consistent performance for years to come.

The CS-0821 is fully customizable to meet your brand's unique needs. From custom color options (the base model comes in classic black, with custom colors available on request) to branded packaging and printed logos, we work with you to create a speaker that aligns with your brand identity. Whether you're a retailer looking to stock a private-label product, a corporate buyer seeking promotional gifts, or an event planner in need of branded party gear, our customization services let you put your stamp on every unit.

We offer flexible minimum order quantities (MOQ) starting at 1000 pieces, with reliable lead times of 3–25 days to meet your production schedule. Our team is committed to working with you every step of the way, from design and prototyping to bulk production and delivery, ensuring your custom speakers meet your exact specifications.