JBL Go 4 Mono prenosný reproduktor maskáčový 4,2 W

The JBL Go 4 Mono portable speaker in Camouflage delivers compact, single-channel audio with a rated RMS power of 4.2 W and a frequency response spanning 90–20,000 Hz. Designed for mobile phones and smartphones, the speaker uses Bluetooth wireless connectivity (2.4–2.4835 GHz) with A2DP and AVRCP profiles and houses a built-in 850 mAh Lithium‑Ion battery. Weighing approximately 0.19 kg and finished in a camouflage colour, this model offers a lightweight, pocketable option for casual listening and on-the-go use.

Advantages

The speaker provides clear mono sound with a signal-to-noise ratio of 85 dB, suitable for spoken word, podcasts and background music. Its small form factor and low weight make it easy to carry or attach to a bag, while Bluetooth support ensures wireless playback from most modern smartphones. The integrated battery enables portable operation without constant access to a power outlet.

Suitable for

• Casual music listening outdoors and indoors
• Hands‑free calls and voice playback from mobile phones
• Portable background audio for picnics, small gatherings or travel
• Use with smartphones, tablets and other Bluetooth‑enabled devices

Key specifications

• Output power (RMS): 4.2 W
• Frequency range: 90 – 20,000 Hz
• Signal-to-noise ratio: 85 dB
• Wireless frequency: 2.4 – 2.4835 GHz
• Bluetooth profiles: A2DP, AVRCP
• Battery type: Lithium‑Ion, capacity 850 mAh
• Number of speakers: 1 (mono)
• Weight: 0.19 kg
• Colour: Camouflage

How to use

Charge the built-in battery fully before first use using the provided cable or compatible USB charger. Power on the speaker, enable Bluetooth on your mobile device and select the JBL Go 4 from the available devices list using the A2DP profile for audio streaming. Use the device controls to play, pause or skip tracks and adjust volume from either the speaker or the connected phone. After use, power off the speaker to conserve battery.

Recommendations

For optimal audio clarity, place the speaker on a stable surface and avoid enclosing it in tight spaces. Keep the device within typical Bluetooth range (up to about 10 meters depending on environment) and recharge the battery after extended use. Avoid prolonged exposure to moisture and extreme temperatures to maintain performance and longevity.