How long does the battery last on the Yamaha YH-L500A headphones?

The battery can last up to a maximum of 20 hours of continuous use.

What is the weight of the Yamaha YH-L500A headphones?

The Yamaha YH-L500A headphones weigh approximately 9.3 oz (265 g).

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Yamaha YH-L500A Wireless Over-Ear Headphones - Sound Field Mode, Lightweight, Bluetooth Multipoint, aptX Adaptive, Google Fast Pair (Black)

Perfect for watching movies and streaming shows at home
Sound Field: experience spacious, cinema-like sound from all your Bluetooth-enabled devices, including your tablet, phone, computer and TV
Comfortable and lightweight - only 9.3 oz (265 g)
Bluetooth Multipoint: pair two of your devices and instantly switch between them
Gaming Mode: reduces lag between sound and video when watching videos or playing games
Qualcomm aptX Adaptive: stable wireless connectivity and premium streaming quality
Google Fast Pair: effortless pairing with Android devices
Listening Care: intelligent equalization for full-range sound at lower listening volumes
Simple controls: control volume, track selection and modes with easy-access buttons on the earcup
Comes with USB-C cable and audio cable. iOS/Android app available to download.