Studio-Grade Acoustic Performance​​ Precision-engineered birch plywood cabinet (12mm thickness) with cross-braced interior reduces resonance by 37% (ASTM E413-16 tested). Dual 3" full-range drivers (25mm voice coils) and 20mm silk dome tweeters deliver 35Hz-20kHz frequency response (±2dB), achieving 90dB SPL for immersive home theater or music streaming. 15-Hour Wireless Playtime & TWS Pairing​​ 5000mAh lithium battery supports 20-hour continuous playback at 70% volume. TWS mode synchronizes dual units for 360° surround sound, ideal for outdoor parties or multi-room setups. USB-C fast charging (5V/2A) doubles as a 10W power bank for emergency device charging. Pro-Level Connectivity & Bluetooth 5.3​​ BT5.3 ensures 30ft stable transmission with aptX HD/AAC codec support. Dual 3.5mm ports enable mic input (karaoke) and audio monitoring (podcasting), while AUX-in with 10kΩ impedance matches turntables/gaming consoles. Military-Grade Durability & Volume Control​​ MIL-STD-810G certified enclosure withstands 1.2m drops. Silicone-damped buttons precisely adjust 20W×2 RMS output (THD ≤1%), covering 65-95dB range for both intimate listening and outdoor gatherings. 2-Year Warranty & Lifetime Support​​ FCC/CE certified with short-circuit/overcharge protection. Includes 24-month manufacturer warranty and lifetime technical assistance via Amazon Message Center (response within 12 business hours).