Amazon offers the Kmashi Arma K1 Rugged Waterproof IP66 Dustproof Shockproof Stereo Cubic Wireless Bluetooth 4.0 Speaker with built-in 4800mah External Battery Power Bank for low $21.99 after coupon code "I8IO22LV" plus FREE shipping for Prime members or on orders of $35+.

What makes this deal hot:
You save $52 off the price! That's the lowest price we could find. This has a 4.9 out of 5 star rating but ONLY 10 reviews currently. That's the cheapest Bluetooth speaker + battery bank with these specs we could find.

What this does & Why you need it:
Waterproof design
Built-in 4800mah External Battery Power Bank
Up to 35 hours of playback time
LED flashlight
Unique Outdoor Hook Design
Bluetooth 4.0 wireless range of up to 33 feet
1 Year warranty