The Smart Posture Correction Wizard is a lightweight and effective device designed to help improve posture by providing gentle reminders to maintain an upright position. With Bluetooth connectivity and a long battery life, this wearable posture corrector is perfect for both children and adults. Choose from a variety of colors, and enjoy the comfort and convenience of a solution that’s easy to wear and use.Key Features: Material: Plastic Power Supply: Internal rechargeable battery Communication: Bluetooth Low Energy 4.1 and above Rated Input: 5V 1A Working Hours: 90 hours on a full charge Charging Time: Approximately 1.5 hours Colors Available: Yellow, Blue, Pink (Children's); Black, Red (Adult) Size Information: Children's Size: 120 x 132 mm, neck circumference 26-33 cm Adult Size: 137 x 167 mm, neck circumference 34-43 cm Note: Black and Red: Adult styles Yellow, Blue, Pink: Children's styles Package Includes:1 x Smart Posture Correction Wizard