• Adopts PO²  digital power synthetic technology, 8W output power • Rare earth material speaker features light weight, excellent sound quality and loud output volume • With music play and single cycle function, supports multimedia audio file play of U disk and TF card • LOW-THD Adaptive Technology prevents sound distortion under high power output • Built-in high capacity rechargeable lithium-ion battery, 5 hours fast recharging time and long play time up to 8-12 hours • MCU intelligent recharging management system for secure recharging and discharging • Durable ABS case, compact and stylish design • Multiple wearing choices for convenient use