HW12 Vibrating Alarm Clock Smart Bracelet | Silent Wake-Up Band

Wake up quietly without disturbing anyone around you. The HW12 Vibrating Alarm Clock Smart Bracelet is a lightweight, wearable wristband designed for anyone who needs a discreet, silent alarm. No ringing, no buzzing speaker — just a gentle vibration on your wrist that gets you up on time, every time.

Made in Mainland China.

Why You'll Love This Smart Wristband

• Silent Vibrating Alarm: Set the alarm directly on the bracelet — no app required. Wake up gently without disturbing a sleeping partner or anyone nearby.
• Step & Activity Tracker: A high-sensitivity 3D G-sensor captures even small movements for accurate step counting (±5%). Tracks up to 39,999 steps.
• Calorie & Distance Display: View your motion data — calories burned and distance covered — right on your wrist throughout the day.
• Sleep Monitor: Tracks your sleep patterns to help you understand and improve your rest cycle.
• LED Time Display: Always know the time and date at a glance with the clear LED screen.
• Timekeeping / Stopwatch Function: Use the built-in timer to track workout sessions with real-time motion, distance, and elapsed time.
• 24-Hour Motion Memory: Activity data is stored throughout the day and automatically resets at midnight — smart and hassle-free.
• USB Charging — No Cable Needed: The bracelet features a built-in USB connector; just plug it into any USB port to charge. Simple and convenient.
• Life Waterproof: Splash-proof and sweat-resistant for everyday active use.
• Comfortable Fit: Made from food-grade, eco-friendly silicone that's soft, adjustable, and suitable for men and women.

Full Specifications

• Material: Food-grade environmentally friendly silicone
• Display: LED screen
• Charging: Built-in USB connector (DC 5V)
• Battery: 50mAh Li-polymer
• Pedometer: G-sensor, ±5% accuracy, up to 39,999 steps
• Weight: 18g
• Dimensions: 215(L) × 17(W) × 8(H) mm
• Waterproof: Life Waterproof (splash/sweat resistant)
• Certifications: CE, FCC, RoHS, WEEE
• Bluetooth: None (standalone device)
• GPS: None
• Compatible with: All wrist sizes (adjustable band)
• Country of Origin: Made in Mainland China

Great For

• Anyone sharing a bedroom who needs a quiet, non-disruptive morning alarm
• Fitness enthusiasts tracking steps, calories, and daily activity
• Anyone wanting a simple, no-fuss wearable without a complicated app
• Men and women of all ages looking for an affordable everyday activity band

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For general guidance on physical activity tracking and health monitoring, visit the CDC Physical Activity Resource Center.

Learn more: Fitness tracker

Frequently Asked Questions

Q: Does the HW12 vibrating alarm bracelet require a smartphone app to set the alarm?

A: No app is needed! The silent vibrating alarm can be set directly on the bracelet itself, making it extremely simple to use right out of the box without pairing to any phone.

Q: Is the HW12 smart wristband waterproof?

A: The bracelet is rated Life Waterproof, meaning it is resistant to everyday splashes and sweat. It is not designed for swimming or submersion. It's ideal for workouts, rain, and daily wear.

Q: How do I charge the vibrating wristband?

A: The HW12 features a built-in USB connector — simply remove the band cap and plug it directly into any standard USB port (5V). No separate charging cable is required.

Q: Can both men and women wear this smart bracelet?

A: Absolutely. The adjustable silicone band is unisex and designed to fit a wide range of wrist sizes comfortably for both men and women.

Q: Does this bracelet connect to Bluetooth or GPS?

A: No — the HW12 is a fully standalone device with no Bluetooth or GPS. All data (steps, calories, sleep, alarm) is managed on the bracelet itself, keeping things simple and battery-efficient.