Gold Box: OontZ Angle Bluetooth speaker by Cambridge SoundWorks : $20 Prime shipped (Orig. $80), waterproof: $35 (orig: $130)

As part of its Gold Box, Amazon offers the The OontZ Angle Bluetooth speaker by Cambridge SoundWorks in Black, Gray or Green for $19.99 Prime shipped (free trial). That’s $60 off the list price and $8 less than our previous mention.

The OontZ features 2 precision neodymium speaker drivers, designed by Cambridge SoundWorks to deliver clear sound and eliminate distortion. It has a stylish design and it’s ultra-light weight at only 9 ounces. You can have up to 12 hours of playtime from a single charge of the rechargeable battery. This is a quality speaker from a renowned speaker company priced lower than a lot of Chinese knockoffs.

Over 2,500 Amazon customers gave it a 4.3/5 star rating and 9to5Mac called it “a no-brainer, with its great sound and 10- hour battery.”

For $35, Amazon also offers the Cambridge SoundWorks OontZ Angle PLUS IPX-5 Waterproof Ultra Portable Wireless Bluetooth Speaker for $34.99 Prime Shipped.  It adds water/dustproofing, bigger sound/bass and a 15 hour battery. It also gets extremely high ratings.