Sony LinkBuds S - the world’s smallest and lightest, noise cancelling, Hi-Res Truly wireless earbuds. Approx. 4.8 grams in weight. Adaptive Sound Control delivers the ideal listening experience. The 5mm driver unit reproduces powerful bass and crystal-clear vocals. Precise Voice Pickup Technology ensures you can hear and be heard when taking calls, even in noisy places. Smart features include Speak-to-Chat, which pauses the music when you speak, touch control, and more. Up to 20 hours battery life with charging case - Optimised for Alexa and the Google Assistant - Built-in mic for phone calls - Reliable Bluetooth connection. IPX4 water resistant. These Sony earbuds gives you the best of both worlds: natural ambient sound when you want to interact with your world and high-quality noise cancelling when you need to focus. Enjoy High-Resolution Audio Wireless and crystal-clear phone calls on these Bluetooth earbuds. For total convenience, these Bluetooth headphones can be paired with two Bluetooth devices at the same time. So when a call comes in, your headphones know which device is ringing and connects to the right one automatically. Firmware update is required. Firmware will be available in November 2022. Headphone FeaturesSilicone rubber ear pieces. Connection: true wireless. Bluetooth enabled for a wireless connection to your devices . Connects to devices via Bluetooth. 5mm driver. Touch controls on side controls. Active noise cancellation. 10m range. Bass control. IPX4 water & sweat resistant. Compatible with universal smartphones. Batteries required 3 x Li-Ion battery (included) . Rechargeable battery. 6 hour battery life. 180 minute charging time. Fast charge to boost battery life. Charging case included. In the box: Reference Guide, Warranty Card, Hybrid silicone rubber earbuds, USB Type-C & Charging Case. General InformationModel number: WFLS900NB. CE7. Manufacturer’s 1 year guarantee. EAN: 4548736133006. Warning - Not suitable for children under the age of 3 years due to small parts and entanglement hazard. Caution – To prevent possible hearing damage, do not listen at high volume for long periods.