They’re comfortable and light with a secure fit, so you can wear them for extended periods of play. The open-air construction lets you have a conversation without having to remove headphones. Most importantly, RH-A7 headphones provide high-quality sound that lets you experience the complete, dynamic range of modern digital pianos. From delicate pianissimo to forceful fortissimo, these headphones handle every nuance and detail of your performance. Features Wide-ranging and well balanced; based on a high-fidelity design optimally suited for modern instruments such as digital pianos Open-air construction lets you have a conversation without having to remove headphones Light (approx. 200 g), comfortable, and secure fit; enables extended sessions without fatigue Available in three colors: black, white, and two-tone black and red Specifications Type of Construction: Open type; dynamic Driver: 40 mm in diameter Sensitivity: 97 dB/mW Maximum Input: 1000 mW Impedance: 34 ohms Frequency Response: 10 Hz to 25,000 Hz Cord: 3 m (10'') Plug: Stereo mini (gold-plated)/ Plug adaptor (mini plug to 1/4 inch phone plug) Weight: 200 g (8 oz)