boAt Party Pal 60 / 63, 20 Watts Stereo Channel Party Speaker (Ultra Smooth HD Sound with Preset EQ Mode, Black)

Highlights:
• Awesome Sound quality, Same as the new piece
• With Mic
• Almost New Condition
• It's Working Condition is as good as new one
• Perfectly Working
• Worth ₹6000
• Power Output(RMS): 20 Watts
• Charging time: upto 2 to 3.5 hr
• Upto 3 to 4 hours of Play-Time, in 50% Volume i.e. in Mids
• Connectivity: Bluetooth | USB | Radio | Aux | Memory Card
• Dimensions: 20.00 x 46.00 x 21.00 cm
• 2200mAh Lithium Battery
• Premium 20W Party Sound Output
• Integrated Controls with In-Built Mic
• One Can Accept Calls On The Speakers
• Can Be Charged With A Mobile Charger

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.