POWERbreathe K4 – Professional Inspiratory Muscle Trainer
Professional-grade inspiratory muscle training with real-time biofeedback.
The POWERbreathe K4 is a precision digital breathing trainer built for athletes, coaches and performance-focused users who want detailed, real-time data on their breathing training. It uses an electronic tapered-resistance valve that automatically adjusts through each breath, and connects to the Breathe-Link® software (for desktop or laptop, not an app) for live feedback and in-depth session analysis.
Whether you're training for endurance, recovery or general respiratory performance, the K4 gives you the tools to track meaningful progress over time.
How It Works
Each breath through the K4 is met with electronically tapered resistance that adjusts automatically to match the natural decline in force through your breath, for a fuller and more complete training breath than a fixed-resistance device. Connect to Breathe-Link® software for real-time biofeedback, detailed metrics and session history during training.
Key Features
- Live performance tracking via Breathe-Link® software (desktop/laptop only, not an app)
- Measures Load (cmH₂O), Power (Watts), Volume (Litres), Flow (Litres/sec) and Energy (Joules)
- On-device storage for up to 36 training sessions
- Multi-user capability — up to 10 user profiles and 1,200 stored sessions per user via software
- Graphical display of historical performance trends
- Automatic resistance adjustment that adapts to your breathing in real time
- Rechargeable via USB, lightweight and portable
Recommended Use
Follow the on-screen prompts to complete your initial assessment, then train using the recommended resistance level. Connect to Breathe-Link® software for more detailed programs, progress graphs and multi-user profiles. Most users train in short daily or twice-daily sessions, reviewing session history over time to track improvement.
What's in the Box
- POWERbreathe K4 device
- AUS plug and USB charging lead
- Charging cradle
- Mouthpiece
- Nose clip
- Storage pouch
- Cleansing tablets
- User manual
- Note: Breathe-Link® software is downloaded separately and is designed for desktop/laptop use, not mobile
Care and Cleaning
Remove the mouthpiece and valve head after each session and rinse in warm water, opening and closing the valve under the tap to clean the surfaces. Shake off excess water and leave to air dry. Once a week, soak the valve head in warm water with a cleansing tablet for around 10 minutes instead of a plain water rinse, then rinse and air dry. Keep the electronic display unit itself dry — only the mouthpiece and valve head should be rinsed or soaked.
Important Notes
Don't use the K4 while you have a cold, sinus infection or chest infection — wait until you're fully better. Training should never hurt — if it does, stop and see your doctor. Adult supervision is recommended for anyone under 16.