Remax RB-M21 RGB Portable Bluetooth Speaker vs Anker Soundcore Select Go 4 Portable Bluetooth Speaker
A side-by-side comparison of two of the best speakers & sound systems you can buy in Sri Lanka right now — The Remax RB-M21 RGB Portable Bluetooth Speaker is the cheaper of the two at LKR 4,999; the Anker Soundcore Select Go 4 Portable Bluetooth Speaker costs LKR 3,300 more. Both are genuine with warranty, and you order in seconds with cash on delivery.
update Live LKR prices — updated August 2026.
Anker Soundcore Select Go 4 Portable Bluetooth Speaker
LKR 8,299 LKR 15,000
or 3 × LKR 3,098 with KOKO
At a glance
| RB-M21 RGB Portable Bluetooth Speaker | Soundcore Select Go 4 Portable Bluetooth Speaker | |
|---|---|---|
| Price | LKR 4,999 | LKR 8,299 |
| Discount | 62% off | 45% off |
| Warranty | 6 Months | 18 Months |
| Availability | In stock | In stock |
| Condition | Brand New | Brand New |
Which should you buy?
Choose the Remax RB-M21 RGB Portable Bluetooth Speaker if…
- check_circle you want to spend less — it's LKR 3,300 cheaper
- check_circle you want the fuller feature set on paper
- check_circle the bigger saving appeals (62% off RRP)
Choose the Anker Soundcore Select Go 4 Portable Bluetooth Speaker if…
- check_circle you'll pay LKR 3,300 more for its extra capability
- check_circle a longer warranty matters (18 Months)
Still can't decide? Our buying guides rank the full range, award by award.
Full specifications compared
| Spec | RB-M21 RGB Portable Bluetooth Speaker | Soundcore Select Go 4 Portable Bluetooth Speaker |
|---|---|---|
| Brand | Remax | Anker |
| Color | Black, Blue, Green | Black, Blue, Gold, Green |
| Bluetooth Version | 5.4 | — |
| Charging Time | 2.5 hours | — |
| Playtime | 4.5 hours at 100% volume with lights on; 10 hours at 50% volume with lights on | — |
| Impedance | 3Ω | — |
| Frequency Response | 70Hz – 20KHz | — |
| Speaker Power | 5W | — |
| Working Voltage | 5V | — |
| Lighting Modes | 4 RGB lighting modes | — |
| Design | Palm-sized cola can shape | Compact and lightweight |
| Portability | Built-in silicone ring for easy carrying and secure placement | — |
| Category | Speakers / sound system | Speakers / sound system |
| Warranty | 6 Months | 18 Months |
| Model | — | Anker Select Go 4 |
| Type | — | Portable Bluetooth Speaker |
| Connectivity | — | Bluetooth |
| Sound | — | Enhanced bass audio |
| Waterproof | — | Yes (IPX rating) |
| Battery | — | Long-lasting playback time |
| SKU | — | 14828 |
Keep comparing
Frequently asked questions
Which is better, the Remax RB-M21 RGB Portable Bluetooth Speaker or the Anker Soundcore Select Go 4 Portable Bluetooth Speaker? expand_more
The Remax RB-M21 RGB Portable Bluetooth Speaker is the cheaper of the two at LKR 4,999; the Anker Soundcore Select Go 4 Portable Bluetooth Speaker costs LKR 3,300 more. Pick the Remax RB-M21 RGB Portable Bluetooth Speaker if you want to spend less — it's LKR 3,300 cheaper. Pick the Anker Soundcore Select Go 4 Portable Bluetooth Speaker if you'll pay LKR 3,300 more for its extra capability. Both are 100% genuine and supplied with warranty by DreamTek.
What's the price difference between the Remax RB-M21 RGB Portable Bluetooth Speaker and Anker Soundcore Select Go 4 Portable Bluetooth Speaker? expand_more
The Anker Soundcore Select Go 4 Portable Bluetooth Speaker costs LKR 3,300 more — LKR 8,299 vs LKR 4,999 for the Remax RB-M21 RGB Portable Bluetooth Speaker. Prices are in LKR and updated August 2026.
Can I pay for either in installments? expand_more
Yes. KOKO splits either into 3 payments — about LKR 1,866 each on the Remax RB-M21 RGB Portable Bluetooth Speaker, or LKR 3,098 on the Anker Soundcore Select Go 4 Portable Bluetooth Speaker. Those amounts include KOKO's 12% plan fee, so a KOKO order totals 12% above our cash price; cash on delivery and bank transfer cost the listed price.
Is cash on delivery available for the Remax RB-M21 RGB Portable Bluetooth Speaker and Anker Soundcore Select Go 4 Portable Bluetooth Speaker? expand_more
Yes — cash on delivery is available in most areas of Sri Lanka, so you can check either phone before you pay. We also accept bank transfer and KOKO installments.
Where can I buy the Remax RB-M21 RGB Portable Bluetooth Speaker or Anker Soundcore Select Go 4 Portable Bluetooth Speaker in Sri Lanka? expand_more
Order either from DreamTek in one step — name, phone and address — and we deliver island-wide from our Ja-Ela store — typically within 1–5 business days, with a Colombo pickup option too.