The lifespan of a JBL Flip 4 wireless speaker will depend on several factors, including usage, maintenance, and environmental conditions. Generally, the Flip 4 is designed to be a durable and long-lasting device. With proper care, it can function for approximately 5-7 years. However, the battery life may degrade over time and potentially need to be replaced after a few years of use. Additionally, if the speaker is frequently exposed to harsh environmental conditions or subject to heavy usage, its lifespan may be shorter than expected.