The CLA7v2 is an amplified powered neckloop that reduces or eliminates interference between cellular and t-coil hearing aids/cochlear processors. It provides hands-free calls with great sound quality and up to 30dB amplification for corded, cordless and cellular phones. Now users do not need to have multiple headsets or switch headsets for different activities. One year warranty. Features: 30dB amplification User-friendly controls and cables 4 connection cables included: 3.5mm to 2.5mm mono hands-free 2.5mm to 2.5mm stereo adapter 3.5mm to 3.5mm mono audio 3.5mm to 3.5mm stereo audio One device for multiple applications (cellular phones, home/office phones, laptops, portable gaming devices, iPods and MP3s, personal/TV listening) Approximately 200 hours of use on 2 AAA batteries (included) Binaural design Volume control Built-in microphone Quick release feature