The Airofit Pro 2.0 respiratory trainer: Small but effective / The Airofit Pro 2.0 respiratory trainer is equipped with an exceptional precision measurement sensor, enabling precise progress monitoring. The advanced lung capacity test, divided into three stages, displays remarkable accuracy in assessing accessible lung capacity. This unit offers a complete vision of respiratory training and lung test data, making it easy to track improvements. Integrated resistance wheels restrict airflow, fatiguing respiratory muscles. This fatigue leads to muscle strengthening, compensating for the initial resistance and resulting in stronger, faster, more efficient muscles. What's more, its battery guarantees long training sessions, with an autonomy of 4 to 7 days before needing a recharge. / / Main features: / - Material: ABS plastic (body), Silicone (valves), TPE (mouthpiece) / - Power supply: Battery (Rechargeable via magnetic charging cable) / / Package contents: / - Airofit Pro 2.0 respiratory trainer with extended mouthpiece / - Quick start guide (in English) / - Safety instructions (available in 12 languages) / - Magnetic charging cable / / This Airofit Pro 2.0 respiratory trainer represents an invaluable tool for all those seeking to improve their respiratory capacity and athletic performance. Small but powerful, it's essential for precise, effective respiratory training.