Weighing less than 1/4 ounce, Sound Soldier Boost II HD Series BTE from Do-All Outdoors make you forget that you are wearing them. With up to 40dB of gain, you will be able to hear the language of the outdoors like the game you are chasing. Two digital channels with Dynamic Contrast Detection for the sharpest, clearest, and crispest sound imaginable. Equipped with layered noise reduction for protection and fine tuning. Sound Activated Compression to protect your hearing for years to come from the harmful effects of muzzle blast. Features advanced adaptive feedback cancellation and push button program with four volume settings. The Sound Soldier Boost II HD Series BTE includes fitted left and right acoustic sound tubes, foam tips (when hearing enhancement and protection is needed), silicone tips (when only enhancement is required), protective carrying case, cleaning tool and batteries. 2-year limited warranty.