How do I turn the Nima speaker ON/OFF? Hold the power button down for 3-4 seconds to power on or until you hear a sound prompt, which will indicate that the speaker is now ready for pairing. Short press the button to power off. Related articles Do you have a NIMA Sports retail store? What is the battery life of the NIMA speakers? What are the dimensions and weights of the different sizes of helmet speakers? How do I connect my Nima speaker to my TV? What is your Nima speaker warranty?