| Specification | Detail |
| Model | Marshall Willen II |
| Speaker Type | Portable Bluetooth Speaker (Mono) |
| Driver Configuration | 1 × 2" (10 W) Dynamic Full-Range Driver + 2 × Passive Radiators |
| Power Amplifier | 1 × 38 W Class-D Amplifier |
| Cabinet Principle | Sealed with Passive Radiator |
| Frequency Response | 75 Hz – 20,000 Hz |
| Maximum Sound Pressure Level | 88 dB SPL @ 1 m |
| Wireless Connectivity | Bluetooth 5.3 LE (Bluetooth LE Audio-ready) |
| Wireless Range | Up to 100 m in Free Field |
| Audio Codec | LC3 |
| Multi-Host / Sharing | Auracast / Bluetooth Multipoint Connectivity |
| Microphone | Built-in Microphone for Hands-Free Calling |
| Battery Playtime | 17+ Hours |
| Charging Time | 2.5 Hours (Full Recharge) |
| Quick Charging | 20 Minutes Charge gives 5.5 Hours of Playtime |
| Charging Interface | USB Type-C (5V ⎓ 1.5A) |
| Water & Dust Resistance | IP67 (Submersible up to 1 m for 30 minutes) |
| Controls | Multi-directional Control Knob, Power Button, Bluetooth Pairing Button, Battery Indicator |
| Dimensions | 100.5 × 100.5 × 43.4 mm (3.96 × 3.96 × 1.71 in) |
| Weight | 0.36 kg (0.79 lb) |
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