The Caldwell E?Max Shadows Pro Earbuds in black connect to your device via Bluetooth, providing up to six hours of music playback or phone calls. This redesigned pro version features push-button controls, allowing you to easily adjust ambient noise, change volume, answer calls, and access your voice assistant, such as Siri. The earbuds also include an optional magnetic lanyard and a rechargeable storage case equipped with LED battery level indicators for each earbud, so you always know when your E?Max Shadows Pro are fully charged and ready for use at the range.