Ultimate Ears
Ultimate Ears WONDERBOOM 4
Ultimate Ears WONDERBOOM 4 portable Bluetooth speaker with manufacturer-sourced battery, durability, weight, and connection specifications.
Bettr Than Score · Balanced
56.6/100
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Marshall
Marshall Kilburn III
Marshall Kilburn III portable Bluetooth speaker with manufacturer-sourced battery, durability, weight, and connection specifications.
Bettr Than Score · Balanced
43.4/100
Category-specific score
What matters most to you?
Value, battery, portability, durability, and useful connections.
Ultimate Ears WONDERBOOM 4
56.6 / 100
Marshall Kilburn III
43.4 / 100
100% supported scoring weight · 11 shared fields.
How this score works
- Reference price: 20% · Ultimate Ears WONDERBOOM 4 has the favorable value
- Advertised battery life: 20% · Marshall Kilburn III has the favorable value
- Weight: 15% · Ultimate Ears WONDERBOOM 4 has the favorable value
- Durability tier: 20% · Ultimate Ears WONDERBOOM 4 has the favorable value
- Can charge another device: 10% · Marshall Kilburn III has the favorable value
- USB audio input: 5% · equal
- Auracast or compatible broadcast pairing: 5% · equal
- Floats in water: 5% · Ultimate Ears WONDERBOOM 4 has the favorable value
The score compares published hardware facts. It does not claim to measure sound quality, maximum loudness, tuning, or real-world battery life.
Side-by-side specifications
| Ultimate Ears WONDERBOOM 4 | Specification | Marshall Kilburn III |
|---|---|---|
$99.99 | Reference price | $379.99 |
14 hours | Advertised battery life | 50 hours |
420 g | Weight | 2800 g |
IP67 | Ingress protection | IP54 |
4 | Durability tier | 2 |
5.2 | Bluetooth version | 5.3 |
No | Can charge another device | Yes |
No | USB audio input | No |
No | Auracast or compatible broadcast pairing | No |
Yes | Floats in water | No |
No | Speakerphone | No |
Evidence-based guidance · Balanced model
Ultimate Ears WONDERBOOM 4 leads on the balanced portable speakers model
Based on 11 shared sourced fields and 100% balanced scoring coverage. The score compares published hardware facts. It does not claim to measure sound quality, maximum loudness, tuning, or real-world battery life.
Consider Ultimate Ears WONDERBOOM 4 for reference price ($99.99), weight (420 g), durability tier (4), floats in water (Yes).
Consider Marshall Kilburn III for advertised battery life (50 hours), can charge another device (Yes).
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Where to buy Ultimate Ears WONDERBOOM 4
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Prices and availability can change. Totals exclude tax. Lowest-listed labels compare only fresh, in-stock offers with known shipping in the same currency. Sponsored status never changes their order.
Where to buy Marshall Kilburn III
We may earn a commission when you buy through links marked “Affiliate link.” This does not change your price or our scores. How we earn
No verified retailer offers are available yet.
Prices and availability can change. Totals exclude tax. Lowest-listed labels compare only fresh, in-stock offers with known shipping in the same currency. Sponsored status never changes their order.