OnePlus Buds Z Bluetooth Headset, Slightly Used, not New, In excellent Physical Condition, worth ₹3500

Highlights:
• It's Working Condition is good as new one, Gently Used
• Case is working Perfectly, Buds Charging last for around 2Hrs 15 Mins in 100% Volume, in Mids (ie. In 50-60% Volume) obviously you will get much more backup.
• Just it's case got little scratches, but it's the buds that will be weared by you, so Buds are in mint Condition.
• 10mm dynamic drivers with Dolby Atmos support
• Perfect call: Dual microphones per earbud
• Upto 17 Hrs of Playback combined - Upto 2Hrs Mins in 100% Volume, in Mids (ie. In 50-60% Volume) obviously you will get much more backup)Upto 15 Hrs in the case
• IP55-certified, water & sweat resistant
• Low Latency
• Instant Quick Pairing

Note: to be on safer side, I mentioned the battery backup as low as possible, but obviously it can give more backup than that.
And what u see on Google or WhatsApp, the battery backup of equipment what company claim, is measured in 50-60% Volume only.