
Anker Soundcore A3102
Score: 73/100
Cambridge Soundworks OontZ Ultra
Score: 77/100Rankings

The OontZ Ultra offers 14 W stereo sound, IPX7 waterproofing and a 20-hour battery in a compact, USB-C-charged package. It excels in range and durability but suffers from a very long charge time and a lack of premium build materials.

The Anker Soundcore A3102 offers marathon-long 24 hour playback, IPX5 water resistance and clear stereo sound at a budget price. Its slow 24-hour charge time and reliance on a micro-USB port keep it from competing with faster-charging rivals.
| Attribute | ![]() | ![]() |
|---|---|---|
24 hoursbest | 20 hours | |
6 watts | 14 wattsbest | |
| ↓ lower better | 24 hours | 20 hoursbest |
| ↓ lower better | 380 gbest | 480 g |
20 meters | 30.48 metersbest | |
12 monthsbest | 12 monthsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Audio Performance(1) | ||
Output Power (watts) | 6 watts | 14 watts |
Battery & Power(2) | ||
Battery Life (hours) | 24 hours | 20 hours |
Charging Time (hours) | 24 hours | 20 hours |
Connectivity(3) | ||
Bluetooth Version | 5.0 | 5.4 |
Bluetooth Range (meters) | 20 meters | 30.48 meters |
USB‑C Charging Port | false | true |
Build & Design(2) | ||
IP Rating | IPX5 | IPX7 |
Weight (g) | 380 g | 480 g |

Products in the top-left offer the best value (high score, low price).

Professional reviewers position the Soundcore A3102 as a value-driven entry-to-mid-tier portable speaker, praising its clear stereo output, sub-1% distortion, and industry-leading 24-hour battery life, while noting the slow charging speed as a significant downside.
Everyday users love the speaker's rich sound, long battery life, and rugged IPX5 build, but repeatedly complain about the excessively long charging time, occasional over-processed bass, and the outdated Micro-USB port.

“Battery life is impressive and reliable for camping trips.”

“Charging takes forever - 24 hours is impractical.”

“louder and clearer than expected for its size.”




Professional editors emphasize the OontZ Ultra's standout 100-ft Bluetooth range, robust IPX7 waterproofing, and rich bass response, noting the advanced antenna design and the rarity of stereo pairing in this price segment. They praise its sound and durability while noting typical budget-friendly trade-offs.
Everyday users consistently praise the speaker's loud, clear audio, exceptional battery life, and reliable waterproof performance, especially for outdoor and poolside use. Common complaints revolve around the lengthy 20-hour charging time, lack of a battery indicator, and occasional issues with stereo pairing or bass distortion at high volumes.