Premium In-Ear Audio Provides Powerful and Balanced Sound;Jobsite Aware Mode Provides Controllable Situational Awareness while Reducing the Intensity of Loud External Noises;Up to 10 Hours of Runtime on a Single Charge;Up to 70 hours of Runtime Using Multiple In Case Charges Provided by Redlithium USB Battery;Bluetooth 5.1 Provides up to 55ft of Range;Passive Hearing Protection Provided by Foam (25 NRR) & Silicone (22 NRR) Ear Tips;Phone Call Capable;Water and Dust Resistant;Impact Resistant;Control Calls and Audio With Easy-to-use Buttons;Auto Connects to Prior Devices Out of the Case For Grab-And-Go Use;1 Year Limited Warranty;2 Year Warranty on Redlithium USB Battery