Just add your fruits or other foods into the blender cup, pushing switch and it is ready! The juicer cup is made of food-grade non-toxic and eco-friendly PP & ABS material, you can enjoy fresh nutrient retention and wonderful leisure time. The USB juicer cup comes equipped with a built-in 2000 mAh rechargeable battery that can be easily charged by power bank or other USB devices OUR GUARANTEE We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 30 day guarantee. If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase. Buying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance. If you have problems with the purchase, please notify the customer service