UGREEN CM309 Bluetooth 5.0 Adapter with aptX Low Latency

The UGREEN CM309 Bluetooth adapter adds fast, stable wireless connectivity to devices with older or limited Bluetooth. With Bluetooth 5.0 and aptX Low Latency under 40 ms, your audio stays in step with the screen, so videos, games and calls feel natural.

Setup is plug-and-play, with no complicated drivers. This UGREEN Bluetooth adapter is compact enough for a home desk or a travel bag, and it connects to two devices at the same time.

Key Features

• aptX Low Latency (under 40 ms): Sound and picture stay closely matched, so dialogue doesn’t lag behind the video during movies, gaming or calls.

• Bluetooth 5.0 connectivity: Gives older devices a faster, more stable wireless link to your peripherals.

• Two-device connection: Keep two Bluetooth devices connected at once, so you aren’t limited to a single pairing.

• Plug-and-play design: Plug it in and start using it, with no driver hassle.

• 10 m wireless range: Move around the room while staying connected.

• Built-in 120mAh lithium polymer battery: Up to 8 hours of use per charge, and about 2 hours to recharge.

• Clean audio specs (20Hz–20kHz, SNR above 90 dB, THD below 0.1%): Full-range sound with low background noise and minimal distortion.

• Compact, portable body: Easy to use at home or carry when you travel.

Why Choose the UGREEN CM309 Bluetooth Adapter

If your laptop, desktop or other device has outdated Bluetooth, the CM309 is a simple upgrade. You get Bluetooth 5.0 and low-latency audio without replacing hardware.

• Better audio and video sync: aptX Low Latency keeps audio closely matched with what you see on screen.

• Simple setup: Plug-and-play means you can start in minutes.

• Flexible pairing: Connecting two devices at once suits everyday multitasking.

• Portable convenience: A compact body and rechargeable battery make it practical for home or travel.

• Trusted brand: Many shoppers choose a UGREEN Bluetooth adapter for its dependable performance and straightforward design.

Best Use Cases

• Home entertainment: Pair with wireless headphones or speakers for movies and music.

• Gaming: Low latency helps audio keep up with fast on-screen action.

• Video calls: Clearer, better-synced conversations.

• Travel: Compact enough to pack and use anywhere.

• Upgrading older devices: Adds Bluetooth 5.0 connectivity without new hardware.

Technical Specifications