Best Bluetooth speaker under 800 CZK? This one cost double last year, is waterproof, and has great reviews

Would you like a speaker with 30W power and water resistance for under 800 crowns? You can now get the Niceboy Polaris for 787 CZK with code AUDIOVIDEOTYDNY25, which is the lowest price since its launch in April last year. At that time, it sold for 1,499 CZK. Alza currently has the best offer on the Czech market; according to the price comparison website Heureka, the second lowest price is 1,049 CZK.

Quick summary:
✅ Makes sense if you are looking for a compact speaker for trips, by the pool, or in the bathroom with long battery life and decent performance.
⚠️ Consider if you expect rich bass comparable to larger party speakers – for its size, it plays well, but don’t expect miracles.
💡 For 787 CZK you get IPX7 water resistance, FM radio, True Wireless Stereo, and 20 hours of battery life – an exceptional combination in this price category.

Why this speaker is interesting

Niceboy Polaris targets users who want a compact and durable speaker for trips, by the water, or for home use. For a price under 800 CZK, you get 30W power, a two-way system with separate drivers for low and high frequencies, IPX7 water resistance (can even withstand submersion in water), and up to 20 hours of battery life. Additionally, it features FM radio, a microphone for hands-free calls, and the option to connect two speakers via True Wireless Stereo.

Niceboy is a Czech brand, so any service or warranty claims are handled locally. The return rate on Alza is only 0.48%, which is an excellent figure for an audio product in this price category. Over 2,000 units have been sold.

Key parameters in practice

The speaker operates in a frequency range of 80–20,000 Hz with a sensitivity of 84 dB. Connectivity is provided by Bluetooth 5.3 with SBC codec support. Users in reviews praise that the Bluetooth signal works reliably even through a room wall without interruptions. In addition to Bluetooth, you can play music from a USB flash drive, a microSD card (up to 32 GB), or via an AUX cable with a 3.5mm jack.

IPX7 water resistance means the speaker can handle even more intense contact with water – you can use it without worries by the pool, in the shower, or on the beach. Charging is done via USB-C, which is standard today. The speaker weighs only 500 g and has dimensions of 19.2 × 6.7 × 7.2 cm – it easily fits into a backpack.

Practical aspects: controls, radio, battery life

The control buttons are located directly on the speaker body. Several users in reviews mention that the buttons are stiffer and harder to manipulate. The FM radio works, but station control is confusing according to reviews – stations cannot be easily removed or organized. If you only use the radio occasionally, it’s not a problem, but for daily radio listening, it can be frustrating.

The 20-hour battery life during normal listening is realistic – users report that approximately 30% of the battery is consumed after about 6 hours of music. The speaker automatically turns off after 20 minutes of inactivity, which saves energy. The LED backlight can be set to various colors or turned off completely.

What users say

On Alza, the Niceboy Polaris has a rating of 4.7 out of 5 (58 ratings) and 93% of customers recommend it. Users most often praise the price/performance ratio, clear and distinct sound, excellent battery life, and the fact that the speaker works reliably even in the bathroom thanks to IPX7. Several reviews mention that “for such a small speaker, the sound is great” and “without crackling or popping”.

Critical voices primarily concern the volume, which is not adjusted smoothly – there are large jumps between steps, so the speaker either plays quietly or too loudly. Some users would welcome richer bass, but for a speaker of this size, it’s an expected compromise. One reviewer points out a noticeable delay with AUX connection – if you need to connect the speaker via cable without latency, look elsewhere.

When it doesn’t make sense

If you are looking for a speaker for large parties or a barn, the Niceboy Polaris will not be enough – it’s too compact for that. Similarly, if you expect proper deep bass like with larger party speakers. For professional sound reinforcement or demanding listening in the living room, consider a higher price category. And if you need AUX connection without delay (for example, to a TV), this model is not an ideal choice.

Verdict: who it’s worth it for

For 787 CZK, you get a Bluetooth speaker with 30W power, IPX7 water resistance, FM radio, True Wireless Stereo, and 20 hours of battery life. If you are looking for a compact and durable companion for trips, by the pool, in the bathroom, or for smaller home parties, the Niceboy Polaris is hard to beat in this price range. Since its market launch in April 2025, this is the best price – and the code AUDIOVIDEOTYDNY25 is valid for a limited time only.

Where do you most often take your portable speaker – on trips, to the water, or do you keep it at home in the bathroom?