The new Syllable D900S wireless earbuds adopts the exclusive Multiplex Link composite connection technology of Syllable for absolutely wireless connection. The completely wireless design gives you the freedom to do any kind of sport or work without the hassles of trailing wires. It is very compact and easy to carry, as it weighs only 0.008 kg. The earbuds are an entirely wire free Bluetooth 4.0 solution with a range of 10 meters that looks to bring higher quality to Bluetooth headsets. The Syllable D900S is the updated version of original D900, and provides more stable signal and longer standby time. It also supports the Apt-X Bluetooth music audio codec and offers CD-like audio quality over a Bluetooth 4.0 connection. It reduces the bitrate required to fit within bluetooth’s limited bandwidth without reducing quality, which means that you can ultimately have audio that is similar to wired solutions. Thanks to its implementation of the Apt-X Codec you will really hear the difference when comparing with the D900s with the huge number of headphones available from other manufacturers that do not yet support it. You can expect much higher quality Noise Cancellation, In-Call Quality, Signal stability, 2-Channel Stereo Sound and Battery life with the new D900S. Since these earbuds are designed and aimed at the sports enthusiasts, be it outdoors or indoors, it comes with an IPX4 waterproof certification, which means that it is rain-proof and sweat-resistant. The Syllabus D900S has a frequency range of 20 Hz – 20,000 Hz that allows them to replicate almost the entire range of a standard CD. Another great feature is the intelligent recharging box, which works very much like a powerbank for the earpieces and is able to recharge them up to 6 times before it needs a recharge. Additionally, the earbuds take around 2 hours to fully charge the 65mAh batteries, providing around 4 hours of music time and 90 hours in standby.