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Cylindrical purple Bluetooth speaker with fabric wrap and attached bungee loop

Logitech

Logitech 984-002009 Ultimate Ears BOOM 4 portable speaker Purple

SKU CH-SM6F-WEA9D MPN 984-002009

Portable Bluetooth speaker with 360-degree sound, IP67 waterproof and dustproof rating, floats in water, 15-hour battery life, and 45-metre wireless range

  • NameUltimate Ears BOOM 4 Wireless Bluetooth® Speaker (Purple)
  • ColorPurple
  • Speaker TypeBluetooth Speaker
  • SpecificationPOWER Rechargeable lithium-ion battery for up to 15 hours of
  • CompatibilityFor audio playback: smartphones, tablets and other devices t
  • ConnectivityUSB
  • 360-degree sound radiates evenly in all directions
  • Up to 15 hours playtime on a single charge
  • IP67 rated dustproof, waterproof and floats
  • Drop-tested from 1.5 metres for durability
  • 52% post-consumer recycled plastic in construction

What it is

The Logitech Ultimate Ears BOOM 4 is a portable Bluetooth speaker finished in Purple. It delivers 360-degree sound with deep bass and runs on a rechargeable lithium-ion battery rated for up to 15 hours of playback at 30 percent volume. The cylindrical design weighs 620 grams and measures 184 mm tall by 73 mm wide. It is built for listeners who want rugged, wireless audio indoors or out.

The spec that decides

The speaker carries an IP67 rating, meaning it is dustproof, waterproof to a depth of one metre, and floats if dropped in water. It also survives drops from 1.5 metres. If your use case involves pools, beaches, dusty trails or frequent knocks, this rating is the deciding factor; if you only need a desk speaker that stays dry, a less rugged model would suffice.

How it fits

Pair the BOOM 4 with any smartphone, tablet or device supporting Bluetooth A2DP for wireless playback up to 45 metres away. Charge via the included micro-USB cable and control tracks or trigger one-touch playlists for Spotify, Amazon Music or Apple Music directly from the speaker. The Ultimate Ears Boom app adds four preset EQ modes plus custom tuning, and PartyUp lets you link multiple compatible Ultimate Ears speakers for wider coverage.

Highlights

  • 360-degree sound radiates evenly in all directions
  • Up to 15 hours playtime on a single charge
  • IP67 rated dustproof, waterproof and floats
  • Drop-tested from 1.5 metres for durability
  • 52% post-consumer recycled plastic in construction

Specifications

BrandUltimate Ears
NameUltimate Ears BOOM 4 Wireless Bluetooth® Speaker (Purple)
Model984-002009
Part Number984-002009
ColorPurple
Speaker TypeBluetooth Speaker
SpecificationPOWER
Rechargeable lithium-ion battery for up to 15 hours of play time
Playing at default volume(30%). Actual battery life will vary with use, settings and environmental conditions.
AUDIO
Maximum sound level: 85 dBC (normal)
The actual SPL may vary depending on the environment.
Drivers: two 1.57 in (40 mm) active drivers and two 1.81 x 2.57 in (46.1 x 65.2 mm) passive radiators
WIRELESS CAPABILITIES
147 feet (45 meter) range
Actual Bluetooth range will vary depending on the use, setting, environmental conditions and number of connected devices
CompatibilityFor audio playback: smartphones, tablets and other devices that support Bluetooth [Advanced Audio Distribution Profile (A2DP)]
ConnectivityUSB
Wireless TechnologyBluetooth
Operating Range147 feet (45 meter) range
BatteryRechargeable lithium-ion battery
Playback Time (up to)up to 15 hours of play time
Features15-HOUR BATTERY
VIRTUALLY INDESTRUCTIBLE
SIGNATURE + 4 PRE-SET EQ MODES
DimensionsHeight: 7.3 in (184 mm)
Width: 2.9 in (73 mm)
WeightWeight: 21.87 oz (620 g) (speaker only)
Package ContentsULTIMATE EARS BOOM 4
Bungee (attached to product)
Quick Start Guide (printed inside the box)
Shipping weight0.80 kg
Package size200 × 123 × 103 mm

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Questions about this item

What does 85 dBC maximum sound level mean when the speaker is in a room?

At 85 dBC the speaker reaches a loudness comparable to busy city traffic, so it can fill a medium-sized room or outdoor area without distortion.

How does the Bluetooth connection and 45 metre range work in practice?

The speaker pairs with any device supporting Bluetooth A2DP and maintains a stable link up to 45 metres in open space, though walls and interference will reduce the usable distance.

What do the 184 mm height and 73 mm width mean for fitting the speaker in a bag or cup holder?

The cylinder measures 184 mm tall and 73 mm wide, so it slides into most bottle pockets, backpack side sleeves or standard car cup holders.

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