About this item:

• Hear more than music: Unleash your full workout potential with Sennheiser's sporty audio profile, adaptive ANC, transparent mode, and powerful bass for enveloping sound and focused training
• Polar Fitness tracking: In-Ear sensors for measuring and tracking real-time heart rate and body temperature seamlessly sync with apps and devices for insightful health and performance metrics
• Personalised adaptation for every athlete: Secure fit with replaceable ear fins and ear tips provide a snug, comfortable fit and resistance to IP55 grade sweat and splashes - ideal for all ear shapes and training intensities
• Extended battery life: Don't miss anything with 24 hours total playtime (6 hours in earbuds + 18 hours in case) - the fast charging ensures 45 minutes of playtime in just 10 minutes of charge
• EASY CONTROL: Smart user interface with pressure controls for easy precise handling of earbuds during intense workouts, so you can focus on reaching your training goals
• Frequency range: 15Hz - 18,000Hz]