1more Open Earbuds S51 White Wireless In-ear headphones

Open-Ear Listening With All-Day Comfort

The 1MORE Open Earbuds S51 in White use a clip-on, open-ear design that keeps your ear canals unblocked while music plays, so traffic and conversations stay audible. The open shell makes this model a safer pick for outdoor runs, cycling and busy commutes than sealed in-ear designs. Inside sits a patented driver that boosts acoustic performance by 42%, paired with Bass More+ bass-enhancement and AAC/SBC codec support.

What Sets the S51 Apart

Two design choices separate these earbuds from typical open-ear models. The Balance AIR+ earbud shape and a memory titanium alloy frame keep each side at only 9.5 g, so the hook stays put during intense training without pressing on the ear. A four-microphone array with DNN noise reduction analyses ambient noise for clearer calls, and a dedicated gaming mode drops latency to under 80 ms.

Technical Specifications

The numbers behind the S51 line up around an active listener who needs reliable battery, modern Bluetooth and weather resistance.

• Earbud Weight (Single): 9.5 g — light enough for long sessions without ear fatigue
• Frame Material: Memory titanium alloy — flexible hook that holds its shape
• Battery Life: 11 hours per earbud, 40 hours total with the charging case (AAC, 50% volume)
• Fast Charge: 10 minutes in the case = 3 hours of playback
• Bluetooth Version: 5.3
• Audio Codec: AAC / SBC
• Water Resistance: IPX5 — sweat and light rain are no problem (case is not waterproof)
• Gaming Latency: under 80 ms in low-latency mode
• Microphones: 4 AI ENC microphones with DNN noise reduction

Who Should Pick the S51

The S51 is the right choice for runners, cyclists and commuters who need to hear their surroundings while listening to music or taking calls. The clip-on fit also suits people who find in-ear tips uncomfortable or who wear glasses. With 40 hours of total battery and IPX5 sweat resistance, this model handles daily training, long workdays and travel. Touch controls, Bluetooth 5.3 pairing and the 1MORE app with six EQ presets tuned by Grammy-winning master LUCA make it easy to switch profiles between a morning run and a desk session.