I opened it for the photoshoot, but I have never used it. I purchased it from the official Amazon store. This is a wristband designed specifically for the Plaud NotePin AI voice recorder, a convenient accessory that allows you to easily wear the NotePin on your wrist for recording. It can be freely adjusted to fit any wrist size, ensuring comfortable use even for extended periods. It transforms into an AI smart band, making it easy to record meetings, classes, and ideas while you're out and about. 【Features】 Dedicated Design: This wristband is designed exclusively for the Plaud NotePin, with a sophisticated and smooth texture that suits both business and personal use. Durable & Comfortable Material: Made with smooth, skin-friendly material, it provides a comfortable fit without constriction, even during long hours of wear. Adjustable Size: Fits wrists with a circumference of 18.5-23.5cm, suitable for both men and women. Lightweight and exceptionally comfortable.