LOGITECH Ultimate Ears Wonderboom 4 Bluetooth Standalone Speaker Joyous Bright

The Ultimate Ears WONDERBOOM 4 is a compact, ultraportable Bluetooth stereo speaker in grey and yellow that delivers bigger, bass-forward sound from a single small enclosure. It features a passive radiator (46.1 x 65.2 mm), up to 14 hours of playtime and a maximum sound pressure level of 87 dB. The speaker is IP67 rated for dust and water resistance, will float, and is built to withstand 5-foot drops. Wireless range reaches up to 40 metres and it supports quick one-tap Bluetooth pairing with Android devices. Two WONDERBOOM 4 units can be paired for doubled output or configured as a true left/right stereo pair. (Not compatible with WONDERBOOM 1, 2, BOOM, MEGABOOM or HYPERBOOM.)

Advantages

WONDERBOOM 4 combines compact size with pronounced bass and clear vocals thanks to a dedicated Podcast Mode and an Outdoor Boost for open-air listening. The speaker offers long battery life of up to 14 hours, robust IP67 protection so it can be used near water or in dusty conditions, and durable construction rated to survive 5-foot drops. Environmental design includes at least 31% certified post-consumer recycled plastic by weight in plastic parts.

Suitable for

• Outdoor activities: beach, poolside, hiking
• Home use: kitchen, shower, small gatherings
• Portable listening: travel, picnics, commuting
• Podcast and spoken-word playback

Key specifications

• Model: Ultimate Ears WONDERBOOM 4 (Grey, Yellow)
• Speaker configuration: 1 speaker with passive radiator (46.1 x 65.2 mm)
• Max sound pressure level: 87 dB
• Battery life: up to 14 hours
• Wireless connectivity: Bluetooth, one-tap pairing with Android
• Wireless range: up to 40 m
• Durability: IP67 (dust and water resistant), floats, drop-tested to 5 ft
• Compatibility note: does not connect with WONDERBOOM 1, 2, BOOM, MEGABOOM or HYPERBOOM
• Weight: 0.42 kg
• Material: includes minimum 31% certified post-consumer recycled plastic by weight in plastic parts

How to use

Charge the speaker fully using the supplied cable, then enable Bluetooth on your device and tap once to pair quickly with compatible Android phones. Press the single button to play and control pairing; to link two WONDERBOOM 4 speakers press the pairing control once to double the output and press again to activate left/right stereo mode. Use the Outdoor Boost and Podcast Mode from the device controls or companion app where available to optimise sound for outside listening or clearer vocals. Place the speaker on a stable surface and avoid blocking the passive radiator for best audio performance.

Recommendations

For longer outdoor sessions, keep the speaker dry when not in use and avoid prolonged submersion despite its buoyancy; to preserve battery life, reduce volume when full power is not needed. Use paired speakers for wider stereo coverage at gatherings.