Bose's SoundLink Micro is arguably the best-sounding speaker for its tiny size. Although it's a little pricey, Bose did shave $10 off its list price, bringing it down to $99. It's fully waterproof and available in three color options.

See pricing for Bose SoundLink Micro on Amazon.

At $36, the Tribit XSound Go is one of the top Bluetooth speakers for the money. Besides sounding decent, it's also fully waterproof.

See pricing for Tribit XSound Go on Amazon.

While it's expensive, you'd be hard-pressed to find a better-sounding Bluetooth speaker than the Bose SoundLink Revolve Plus for its compact size.

See pricing for Bose SoundLink Plus on Amazon.

The JBL Flip 4 is about 20 percent larger than the Flip 3 -- and it sounds about 20 percent better.

See pricing for JBL Flip 4 on Amazon.

It may not sound as full as its bigger sibling (SoundLink Revolve Plus), but the slickly designed SoundLink Revolve sounds excellent for its size.

See pricing for Bose SoundLink Resolve on Amazon.

The Wonderboom is one of the best sounding Bluetooth speakers for its compact size -- and it's fully waterproof, which makes it shower-friendly. It started out at $100 but is now down to less than $60 online.

See pricing for UE Wonderboom on Amazon.

The smallest speaker in Sony's Extra Bass line of Bluetooth speakers, the SRS-XB10 delivers more bass than your typical tiny wireless speaker -- and it's water-resistant.

See pricing on Amazon for Sony SRS-XB10.

The UE Boom 2 originally listed for $200 (£179, AU$180), but has now come down in price to around $100 online. It delivers big sound for its size and is a great choice for outdoor use (it's fully waterproof).

See pricing on Amazon for UE Boom 2.

Bose's most compact and affordable Bluetooth speaker has improved sound and a water-resistant design.

See pricing for Bose SoundLink Color II on Amazon.

We like the sound of the JBL Charge 2 Plus a little better, but the fully waterproof Charge 3 has come down in price and is now a better value.

See pricing for JBL Charge 3 on Amazon.

Credit B&O Play for creating a Bluetooth speaker that doesn't look like anything out there already. Although it's expensive at $249, £199 in the UK and AU$379 in Australia, it sounds impressive for its small size and has a high-quality speakerphone.

See pricing for BeoPlay A1 on Amazon.

The Oontz Angle 3 Plus is one the better-sounding inexpensive Bluetooth speakers. It's $35 online and sometimes gets discounted to $30.

See pricing for Oontz Angle 3 Plus on Amazon.

Available in multiple color options, the B&O Play P2 is a slim Bluetooth speaker with a premium design that sounds very good for its small size. Its online price has come down a little.

See pricing for B&O Play P2 at Amazon.

At around $80, Anker's Soundcore Boost costs more than the popular Soundcore 2, but it does sound richer and plays louder, with better bass.

See pricing for Anker Soundcore Boost on Amazon.

JBL Clip 2, the successor to the popular Clip and Clip+, is a waterproof micro Bluetooth speaker with a handy tuck-away cord you can plug into your audio source if need be. It costs a little more than $50 online. The Clip 2 is available in the UK for £35 and AU$49 in Australia. (The Clip 3 is due out in the summer of 2018).

See pricing for JBL Clip 2 at Amazon.

A lot of these small Bluetooth speakers sound fairly similar, but the JBL Pulse 2 manages to distinguish itself with a built-in light show that's fairly mesmerizing. It lists for $200, £170 or AU$300, but can be had for close to half that (around $100) online because there's a newer Pulse 3.

See pricing for JBL Pulse 2 on Amazon.

We prefer the sound of Anker's more expensive Soundcore Boost, but the Soundcore 2 is decent mini Bluetooth speaker for around $40 online.

See pricing for Anker Soundcore 2 on Amazon.

We were fans of UE's original Roll Bluetooth speaker, a compact, waterproof wireless speaker with a unique design that sounded very good for its size and has decent battery life. The UE Roll 2, which retails for $100 USD (£80, AU$95), but can be had for significantly less online, offers improved range and plays louder. It's one of our favorite mini Bluetooth speakers.

See pricing for UE Roll 2 on Amazon.

With the better sounding Flip 4 now on the market, JBL's older Flip 3 is being sold at a discount. A 2015 model, you can now find it online closer to $75 and for as low as £73 or AU$117 in the UK and Australia, respectively.

See pricing for JBL Flip 3 on Amazon.

The Beats Pill+, which charges via Apple's Lightning cable, has a lot to like about it if you can overlook its inflated list price: $229, £189, and AU$267. But it is being discounted online to around $130 (£100), which helps.

See pricing for Beats Pill+ on Amazon.

The Bose SoundLink Mini II has been out for a while but is still good mini Bluetooth speaker with excellent build quality and impressive sound quality for its size. It's come down in price a little since the newer Revolve and Revolve Plus came out last last year.

See pricing for Bose SoundLink Mini II on Amazon.

Polk's Boom Bit -- also referred to as the Bity -- is a tiny speaker you can clip to your shirt. As you might expect, it doesn't sound great, but it works well as a wearable speakerphone in the car and can be used for running and on bike rides.

Klipsch's Groove mini Bluetooth speaker is well designed and packs a punch. When it came out a few years ago, it started out at $150 but is now down to $60 online as it has been discontinued

See pricing on Amazon for Klipsch Groove.

We reviewed Divoom's original Voombox Outdoor and thought it was pretty good for $100. Now the Voombox Outdoor 2 sells for $60 (£40) online and plays very loud for its small size, though it can distort at higher volumes.

See pricing for Voombox Outdoor 2 on Amazon.

We thought the water-resistant Braven BRV-1 was overpriced at its $180 list price, but now that it's come down to less than $50 (£120 in the UK, AU$195 in Australia), it's a lot more attractive.

See pricing for Braven Braven BRV-1 on Amazon.

Polk Audio's Boom Swimmer is a small waterproof wireless speaker that has a bendable tail that allows you to hook the speaker onto anything you want. When it was first released it listed for $60 (£50, AU$79), but can now be had for less than half that online. The newer Swimmer Duo costs more.

It also comes with a suction cup, so you can attach it to the wall -- or glass -- in your shower. It offers better sound than its small size would indicate, but it gets on the list for its flexible, bathroom friendly design. Available in multiple color options.

See pricing for Boom Swimmer on Amazon.