The Vic Firth Bluetooth Isolation Headphones Are High-quality Stereo Headphones, Which Reduce Outside Noise Levels by 25 Decibels. Offering Superb Stereo Sound, These Wireless Headphones Provide a Full and Tight Low End, Clean Midrange and Clear High End. Perfect for Live, Studio or Practice, the Broad Foam Cushions Provide Maximum Comfort for Any Use. The 500ma Built-in Rechargeable Battery Provides Approximately 20 Hours of Use. Using Licensed Bluetooth® Technology, These Headphones Connect Wirelessly to Enabled Devices, and Include a 3.5mm Cable and 1/4in Adapter for Optional Wired Usage. These Are the Ideal Headphones for Any Drummer Looking for Reliable, High-quality Hearing Protection. Specs/