You never need to worry about running out of battery. The Jabra Boost is small and slim, it gives you all the power you need. With up to 9 hours of talk time, and up to 1 year of standby time, with the new Power Nap feature, this allows you to take calls all day and takes the worry away. No more running out of battery, when you are on-the-go. Jabra Boost is easy to use. Voice Guidance prompts will guide you through the pairing process, tell you when you are low on battery, and even when you connect or disconnect your phone*. The intuitive dedicated On/Off slider and volume control button makes the headset even easier to handle, so you will never miss a call. *Voice Guidance: English Just leave your smartphone in your pocket - with Jabra Boost, Siri and Google Now are always available at your fingertips. Just tap the dedicated headset button to activate and engage with Siri or Google Now from your smartphone. Battery & Power Talk Time: Up to 9 hours USB Charging: Yes