Halo Sport 2 uses a lithium-ion rechargeable battery and can complete 8 Neuropriming sessions on a single charge. Battery life is affected by use and other settings, so actual results may vary. The Halo Sport 2 App will notify you when you need to charge your Halo Sport headset.
Playing music on Halo Sport 2 does not affect the battery life.
For information on charging Halo Sport 2, refer to: Charging Halo Sport