Product Parameters:
Black digital alarm bracelet with a minimalist look and integrated display. The strap is described as lightweight and breathable, with an adjustable fit for wrist sizes from 14 to 23 cm. The wearable form is designed for overnight and daily use.

Core Functions:
This bracelet uses gentle vibration to provide a silent alarm experience without audible disturbance. It is designed to be easy to set before sleep by wearing it on the wrist and selecting the desired time. Based on the provided information, it also displays the time, tracks steps, records calories, and offers basic smartwatch-like daily functions in a simple format.

Applicable Scenarios:
Suitable for individuals who prefer a quieter wake-up method, including deep sleepers, light sleepers, and those sharing a room or bed with others. It can be used at home, during travel, at work, or in public settings where a sound-based alarm might be less appropriate. The adjustable and comfortable strap also makes it suitable for men, women, and teenagers within the specified wrist size range.

Product Summary:
This digital alarm bracelet combines a silent vibrating wake-up function with a clear display and basic daily tracking features. With its adjustable black strap, lightweight construction, and simple design, it offers a practical option for sleep and daily routine.