The Pulse V4 features Bluetooth V4.0 (hence the name). It comes with aptX and NFC pairing with a range of 20 meters, and you can also use the included braided AUX cable for another connection option. The V4 features 25 core Kevlar drivers and a 7.4 Volt 3000mah battery that will give you up to 20 hours’ playtime per charge (with a four-six hour full charge time).