• Digital circuitry technology, 12W output power • LOW-THD AT Adaptive Technology features low distortion even at high 　output power • Built-in high capacity rechargeable lithium-ion battery • Built-in MCU intelligent recharging management system for secure 　recharge and discharge and fast recharging time (only 4-6hrs), 　playtime is up to 20hrs • With AUX audio signal input function, as a small speaker • Compact and elegant design, durable ABS construction • Choices of waist or shoulder hanging wear style for convenient use