Truedio IR Extra/Replacement Headest Only - Includes 1 Wireless Headset - Model TD-HEADSETIR Purchase Includes: 1 Wireless Truedio IR Headset Compatible with Truedio IR Model's TD-110 and TD-210 Rechargeable with up to 12 hours of continuous use per charge The Headset balance control allows you to adjust the volume intensity for the left and right ear 1 year manufacturer warranty