The DUVOSS U3 is an ultra-portable wireless Bluetooth speaker designed for everyday carry and outdoor use. Finished in purple, this compact speaker features an ultra-thin 0.5-inch profile and weighs just 0.23 lbs (105g), making it one of the lightest portable speakers available at this size.

The U3 connects to any smartphone or device via Bluetooth 5.0 or NFC (one-touch pairing for Android). It houses multiple multi-directional drivers to deliver a surround sound effect from its slim enclosure. Two U3 units can be paired together via TWS (True Wireless Stereo) to form a left/right stereo pair. A built-in microphone enables hands-free calls. The speaker also supports TF (microSD) card playback for music without a paired device. A built-in magnet on the back allows the speaker to adhere directly to metal surfaces such as smartphone backs with metal frames. A heavy-duty carabiner clip is included for attaching the speaker to backpacks, belts, or clothing. The speaker is IPX7 waterproof and rated dustproof and shockproof for rugged use.

Battery life is rated at approximately 6 hours of playback on a full charge, with a recharge time of about 2 hours via USB.