Veho ZB-7 Wireless Noise Cancelling Headphones allow you to immerse further in your music. Advanced active noise cancellation (ANC). Over-ear style, with super soft ear cushions, allows you to listen all day. Low-energy Bluetooth 5.0 provides an extended playtime of up to 32 hours from a single charge, perfect for commutes and travel. Features: Active noise cancelling Active Noise Cancellation (ANC) for an immersive audio experience Extended play time Built-in rechargeable battery for up to 32 hours continuous play time No wires Connect via 5.0 Bluetooth for wireless listening or use optional 2.5mm output High fidelity sound Premium 40mm dual-core speakers for high fidelity sound Comfort Padded over-ear earcups provide absolute comfort for extended periods of time Foldable design making the ZB-7's ideal for travel Bluetooth version V5.0Driver size 40mmSpeaker sensitivity 117 ± 3dBImpedance 32 ?Frequency response 20Hz – 20KHzANC reduction 32 dBInput voltage 5V?1ABattery size 500mAH