Custom Acoustic Platform Delivers Powerful, Balanced Sound Choose between two listening modes: Active Noise Cancellation and Transparency Mode. Three soft ear tip sizes ensure a secure and comfortable fit for optimal acoustic seal. Enjoy up to 8 hours of listening time (up to 24 hours with charging case) to enhance range and minimize dropped calls. Experience high-quality call performance and voice assistant interaction with the built-in microphone. IPX4-rated sweatproof and waterproof wireless headphones. Package includes: 1 Bluetooth headset (Black). Dimensions may vary slightly due to manual measurements. Color may differ slightly from photos due to display screen variations. Thank you.