The Astrum SP210 Bluetooth Speaker delivers 25W RMS output with thumping clear bass and DSP (Digital Signal Processing) technology for optimized audio in any environment. DSP dynamically adjusts sound to ensure clear, balanced, and immersive performance whether indoors, outdoors, or in noisy settings. With True Wireless Stereo (TWS) pairing, you can connect two speakers for a seamless stereo experience. Enjoy up to 5.5 hours of playtime powered by a 4000mAh battery, with just 3 hours charging time via USB‑C. The built‑in microphone supports hands‑free calling, while versatile playback options include Bluetooth, TF card, and AUX input. Designed for adventure, the SP210 features IPX6 waterproofing and a rugged build, making it perfect for poolside parties, beach days, or camping trips. Dynamic RGB ambient lighting enhances the atmosphere, adding excitement to every gathering. Features Bluetooth 5.3 for stable wireless connection 25W RMS powerful sound with DSP audio optimization Multiple inputs: AUX, TF/SD card (128GB max), USB‑C charging True Wireless Stereo (TWS) pairing Built‑in microphone for hands‑free calls RGB colorful ambient light display IPX6 waterproof rating for outdoor use Up to 5.5 hours playtime per charge Rugged and portable design Technical Specifications Bluetooth Version: V5.3 Supported Profiles: A2DP v1.3, AVRCP v1.6, HFP v1.7, HID v1.1, AVCTP v1.4, AVDTP v1.3, SPP v1.2 Output Power: 25W Speaker Driver: 66mm × 1 Transmission Distance: 10m (open area) Battery Capacity: 4000mAh Power Supply: Type‑C, 5V 1A Charging Time: 3 hours Playtime: 5.5 hours (at 50% volume) Dimensions: 107 × 77 × 124.5 mm Weight: 580g Warranty: 24 Months What’s in the Box 1 × Wireless Bluetooth Speaker 1 × User Manual