Please review the following and consider: JVC Kenwood Victor HA-FW1000T Wireless Earphones Bluetooth Noise Canceling WOOD Series External Sound Input Wood Diaphragm Equipped with Microphone Waterproof Purchased used and used as a secondary pair. The battery is weak. Even after charging and pairing, the smartphone's Bluetooth display shows 80%. Then, after 60 minutes of music playback, it showed 70%. I have not performed any longer duration tests. I do not guarantee how many hours they can be used. Also, these earphones are quiet. I was using the volume at around 80%. Please understand that this seems to be the specification. Only the earphones and charging case shown in the images are included. Please consider if the above is acceptable.