Portable Speaker Sony ULT FIELD 1 Black

The Sony ULT FIELD 1 is a compact, portable Bluetooth speaker that delivers ULT POWER SOUND with enhanced bass from a woofer, tweeter and two passive radiators. Designed for outdoor use, the ULT FIELD 1 has an IP67 rating for water- and dust-resistance and is shockproof. Its light, grabbable design includes an adjustable carry strap and allows horizontal or vertical placement. The speaker offers up to 12 hours of playback, hands-free calling with echo cancellation, and Fast Pair support for quick connection with Android devices.

Advantages

The ULT FIELD 1 produces powerful, detailed sound and boosted low frequencies despite its small size, enabled by the built-in woofer, tweeter and passive radiators. Robust IP67 protection and shock resistance make it suitable for varied environments. The adjustable strap and compact form factor improve portability, while a 12-hour battery and built-in microphone provide long-lasting playback and clear hands-free calls. Fast Pair and stereo pairing with a second ULT FIELD 1 simplify sharing and expanding the soundstage.

Suitable for

• Outdoor activities (beach, park, camping)
• Travel and commuting
• Small gatherings and social events
• Hands-free calls and remote work
• Pairing two speakers for stereo playback

Key specifications

• Brand: Sony
• Model: ULT FIELD 1 (SRSULT10B.CE7)
• Product type: Portable mono Bluetooth speaker
• Colour: Black
• Battery: Built-in Lithium‑Ion 2900 mAh — up to 12 hours playback
• Connectivity: Wireless Bluetooth (Fast Pair support)
• Protection rating: IP67 (waterproof, dustproof)
• Other features: Built-in microphone, echo cancelling, stereo pairing with second speaker
• Weight: 0.65 kg

How to use

Charge the speaker fully before first use. Turn on Bluetooth on your device and enable pairing on the ULT FIELD 1; follow the device pairing procedure or use Fast Pair on compatible Android devices for quicker setup. Place the speaker horizontally or vertically on a stable surface and press the ULT button to enable enhanced bass and increased sound pressure when desired. Use the built-in microphone to answer calls and adjust volume from the speaker or connected device. To expand to stereo, pair a second ULT FIELD 1 and set one unit as left and the other as right.

Recommendations

For best battery life, avoid continuous maximum volume for long periods. Rinse and dry the speaker after exposure to salt water and avoid submerging ports when the protective covers are open. Use the adjustable strap for secure transport and place the speaker on flat surfaces for optimal sound performance.