The Generalscan R3521 is a 2D wearable ring scanner that utilizes the Zebra SE4107 engine. It's capable of reading a wide variety of symbologies, including 1D, 2D, and OCR, even those that are poorly printed or displayed on a screen. The scanner has a battery life of up to 16.1 hours and features dual-mode Bluetooth 4.0 technology, NFC, vibration alerts, AI identifier recognition, real-time data transmission, and batch data offline upload. It's also durable, capable of withstanding multiple 4.9ft./1.5M drops to concrete. The R3521 is suitable for various applications, from warehouse to front-of-store.