Built-in Black Shark's unique personalised character voice. Long press the On/Off button: you will hear the BlackShark Anime-inspired Alert Sound , at this time BlackShark JoyBuds Max is on/off. Click the ANC button to switch modes: Noise reduction mode on/ Normal mode on/ Transparency mode on. Double-click the switch button to switch modes: Game mode on / Music mode on. It is recommended to turn down the volume before turning on the headset. Active Noise Cancellation (ANC) and Transparency Mode: Noise isolating headphones generate sound waves that reflect outside noise, reducing ambient noise by up to 40dB without affecting the source audio. Transparency mode lets the sound of your environment mix seamlessl with your music when you want to stay present and aware All Day Comfort - Lightweight adjustable headband and soft rotating earpads, wireless headphones can be used comfortably for all day. Black Shark JoyBuds Max are foldable and portable. Easily pack and store