Hearing Amplifier - Personal Sound Amplifiers - Digital Quality - Set of 2 2 HEARING AMPLIFIERS WITH 12 VOLUME CHANNELS: Cyber Science has the volume level specifically designed for you. We engineered our personal sound hearing amplifiers with an easy to use volume knob that can adjust to six levels! Cyber Science designed 4 different volume levels for each personal sound amplifier, providing you with a total of 12 volume levels you can customize your hearing. VIDEO DIRECTIONS: Cyber Science understands that some hearing amplifiers can be confusing to operate due to small print manuals and minimal directions, therefore we include step-by-step videos to help walk you through the Cyber Science process. We will be in contact with you as soon as you order your hearing amplifier to ensure high quality customer service. If you don't enjoy your Cyber Science personal sound amplification product simply return it within the first 30 Days for a FULL REFUND! PERSONALIZED TightFit EARTIPS: Cyber Science understands the importance of fitted hearing amplifiers, therefore weve included each hearing amplifier with 3 different sized ear tips . We encourage you to test all three to decide which size fits your ears best! Our Eartips are designed to contour to the shape of your inner-ear and block any background noise from tarnishing your hearing experience. BATTERIES & TRAVEL CASE INCLUDED: Cyber Science provides you with a protective & durable hearing amplifier case and 6 free batteries. We use 1.5v batteries, which are equivalent & compatible with: PG13, L1154, 357, A76, LR44, AG13. Take your personal sound amplification products anywhere you go and enhance your hearing instantly! 100% SATISFACTION GUARANTEED: If you aren't completely satisfied with Cyber Science's Behind the Ear Digital Hearing Amplifier simply return your top-rated hearing amplifier for a FULL REFUND, no questions asked. Cyber Science guarantees to help enhance & amplify your hearing, with limited white noise & static.