BoAt Stone 350 Wireless Speaker with 10W Stereo Sound, upto 3 to y Hours Nonstop Playtime (in mids i.e. 50 to 60% Volume) Lightweight Design, BT, TF Card & AUX, Slightly Used

Highlights:
• It's Condition is good as new one
• Gently Used
• Working Perfectly
• Power Output(RMS): 10 W
• Battery life: 3 to 7hrs (in mids i.e. 50 to 60% Volume)
• Wireless music streaming via Bluetooth
• Multiple Connectivity: BT, TF Card and AUX

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