SUPERIOR SOUND EXPERIENCE - SUUNTO Sonic open-ear headphones adopt an exclusive optimized frequency response curve to make lows more powerful and highs more pleasant. In addition to a newly developed audio driver unit and unique shell structure, the headset not only provides a richer listening experience but also reduces sound leakage issues. POWERFUL CHIP EQUIPPED - The advanced QCC3044 chip on board supports Bluetooth 5.2 multipoint connectivity, allowing you to connect to multiple Bluetooth devices simultaneously and switch seamlessly for multitasking. Compatible with aptX-Adaptive audio technology, SUUNTO Sonic Bluetooth headphones deliver higher-quality, lower-latency and more robust audio streaming. TRUE BONE CONDUCTION TECH - SUUNTO Sonic uses true bone conduction technology to allow audio vibrations to travel along the bones to your ears, keeping your ears open and free of leakage issues. If you work in a busy office or regularly ride and run outdoors, it will be an ideal choice to get a awareness of your surroundings without the hassle of removing your headphones. CRYSTAL-CLEAR VOICE CALL - Background Sound always brings people difficulty in having a clear phone call. SUUNTO Sonic wireless workout headphones with dual built-in HD microphones and cVc echo canceling & noise suppression technology ensure consistent optimum voice quality whether outdoor or urban sports. LONG ENDURANCE & FAST CHARGING - Capable of a 140mAh battery with lower power consumption, the SUUNTO Sonic bone conduction headphones can last 10 hours on a full charge for two marathons wearable use. And fast-charging function allows this headset to charge for 5 minutes to support 90 minutes of use and can be fully charged within 1 hour. SPORTS-FRIENDLY DESIGN - Made of premium silicone and titanium alloy, the sports headphone with hairband weighs only 30.6 g. And with the weight-optimized distribution design, it won't burden your ears even if you wear it for a long-time workout. The IP55 protection rating is resistant to sweat or light rain during sports, but please don't rinse it in the faucet. CUSTOMIZE SETTINGS VIA APP - By connecting this Bluetooth headset to the SUUNTO app, you can not only monitor the battery level at any time, but also easily switch sound modes between normal/outdoor and set the dual-device connection. What's more, if you pair it and your latest SUUNTO watch with SUUNTO app, you will get valuable voice feedback such as lap times and average speeds during your workout. The Suunto Sonic headphones are wireless Bluetooth headphones designed and made for outdoor sports. Featuring an open-ear bone conduction design, it allows you to be aware of your surroundings even when you are listening to audio for outdoor sports or office work. SUUNTO Sonic headset uses an exclusive optimized frequency response curve to make the low frequencies more powerful and the high frequencies more pleasing to the ear. It is also equipped with newly developed audio driver units and a unique shell structure that provides both a richer listening experience and reduces leakage issues. The QCC3044 chip supports Bluetooth 5.2 with multipoint connectivity, allowing you to connect to multiple Bluetooth devices at the same time and switch seamlessly for multitasking. Equipped with a 140mAh capacity low-energy battery, this open-ear headphone lasts for 10 hours on a single full charge. The fast charging feature allows this headset to charge for 5 minutes to support 90 minutes of use and fully charge within 1 hour. By connecting this Bluetooth headphone to the app, you can not only monitor the battery level at any time, but also easily switch between normal/outdoor sound modes and dual device connection. In addition, if you pair the headset and the latest SUUNTO watch on the APP, you can also receive voice feedback. Made of high-quality silicone and titanium alloy, the SUUNTO Sonic bone conduction headphone with hairband weighs only 30.6g. And with the weight-optimized distribution design, it won't burden your ears even if you wear it for a long time to do sports. The IP55 protection rating is resistant to sweat or drizzle during sports, but please don't rinse it at the faucet.