Invisible Smart Posture Corrector- Help correct wrong body posture of back and shoulders, improve hunchback, correct body posture, protect eyesight, and reshape beautiful curves. Built-in High-precision Chip- Built-in high-precision chip, accurately record posture, real-time monitoring of body tilt angle changes, vibration reminder. Automatic Memory- Automatic memory function, intelligent perception of incorrect posture, real-time monitoring of posture, scientifically and effectively help you correct unhealthy postures such as hunchback. Quality Material- The invisible smart aligner is made of food-grade silicone material, which is light and durable, soft and skin-friendly, not easily deformed, fits the human body curve, and is comfortable to wear. Widely Used- Suitable for various occasions such as work, study, walking, reading, etc., it fundamentally helps you solve your posture problems." ----------------------------Welcome To Our Shop----------------------------- All products sold are eligible for 100% Refund within 30 days if it suffers any Non-artificial quality problems. Our Value = Trendy Design + Quality Material + Excellent Workmanship + After Sales Service Commitment. I wish you a happy shopping! Please check the product details Product size (cm): 18.5*14.5*2CM Rated input: 5V/1A, Working time: The battery life is about 1 week (wearing 4 hours a day), Rated power: 0.4W, Battery capacity: 200mAh/3.7V Product list:: posture corrector*1, manual*1, USB charging cable*1 MORE FAQs: Q1.What is the processing time after I placed an order? A: We always process a order within 1-3 days in order to keep the quality of it.Order immediately, we will arrange delivery immediately at our warehouse Q2.How long I should wait for my parcels? A: We usualy delivery the parcels 8-15 days; Expedited shipping is 3-5 days Q3.What can I do if the Item comes with problems? A: If you have problems on your order, please contact us first. We will solve it effectively for you within 24 hours. Thank you very much.