The Sony LinkBuds S (WF-LS900N) are ultralight (4.8 g per earbud) truly wireless noise-canceling earbuds engineered around Sony's Integrated Processor V1, a high-compliance 5mm driver, LDAC Hi-Res Audio Wireless, and intelligent Adaptive Sound Control for seamless transitions between quiet focus and natural ambient awareness.
Integrated Processor V1, 5mm driver, and LDAC Hi-Res Audio
To achieve powerful noise cancellation and punchy bass inside a tiny 4.8-gram shell, Sony paired a high-compliance 5mm neodymium driver with the Integrated Processor V1 (first introduced on the flagship WF-1000XM4). The chip processes low-latency Active Noise Cancellation with minimal battery drain while serving as a high-signal-to-noise DAC/amplifier. Audio enthusiasts get Hi-Res Audio Wireless certification via LDAC (transmitting up to 3x more data than standard Bluetooth at 990 kbps), DSEE Extreme real-time upscaling of compressed streams, and 360 Reality Audio spatial sound.
Natural Ambient Sound, Speak-to-Chat, and AI call clarity
Designed around an "always-on, never-off" wearing philosophy, the LinkBuds S switch automatically between ANC and 20-step Ambient Sound transparency using Adaptive Sound Control, which learns your frequent locations and activities. When you begin speaking to someone, Speak-to-Chat automatically pauses your music and lets outside voices in, or you can hold a finger to the left earbud for instant Quick Attention. For phone and video calls, Precise Voice Pickup Technology combines an outer wind-reducing mesh with an AI machine-learning noise-suppression algorithm trained on over 500 million voice samples.
Bluetooth 5.2 Multipoint, IPX4 rating, and 20-hour battery life
The LinkBuds S support two-device Bluetooth 5.2 Multipoint, LE Audio (LC3) readiness, Google Fast Pair, and Microsoft Swift Pair. Battery life reaches up to 6 hours per charge with ANC on (up to 9 hours with ANC off) plus an additional 14 hours from the 35g USB-C charging case (20 hours total with ANC), and a 5-minute quick charge provides up to 60 minutes of listening. The earbuds are IPX4 water-resistant and ship with four sizes of hybrid silicone ear tips (SS, S, M, LL) and a USB-C cable.
Bangladesh buying guide and compatibility checklist
Before ordering the Sony LinkBuds S (WF-LS900N) from any seller in the BiponiBD catalog, confirm the exact colorway (White, Black, Ecru, or Earth Blue), install the Sony Sound Connect app on Android or iOS to verify firmware and LDAC/Multipoint settings, and confirm local warranty terms.
Official references: Sony Electronics Official LinkBuds S (WF-LS900N) Specifications.
