USER MANUAL Model No.: SPH2028PR001.133 Made in China Dear customer, thank you for purchasing our product SPH2028PR001.133. Please read this user manual carefully before using It. Warm Reminding: 1. In order to extend the life of the speakers and your physical and mental health, please do not play music in large volume mods for a long time. 2. Please select headphone output mode to listen music in public place, so as not to disturb others. 3.