Leading 5000ml Capacity: Our device offers an impressive maximum capacity of 5000 milliliters (5 liters), providing a broad range for lung capacity measurement and supporting lung health assessment. Enhance Breathing Techniques: Use the device to practice slow, deep breathing exercises to help improve breathing patterns and support respiratory function. Flow Rate Indicator: The indicator helps guide your breathing. If the indicator rises too high, you are inhaling too quickly. If it remains too low, you are inhaling too slowly. Aim to keep the indicator in the middle for steady, controlled breaths. Track Your Progress: Monitor your respiratory training with consistent measurements. The wide capacity range supports detailed tracking to help you work toward your breathing goals. Flexible tube and mouthpiece allow for comfortable use in various positions. The device is easy to clean after use and features built-in storage for the tube and mouthpiece. Color: Transparent Material: Plastic Package Contents: 1 x Breathing Exercise Device Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement may vary by +/- 1-3cm.