Massage Gun with Heat and Cold - This massager has 4 normal massage heads and a heating/cooling head with 4 adjustable temperature settings to target different muscle groups. Use the heat function to speed up muscle recovery or the cooling function to effectively relieve muscle tension. Smart Massage Gun with Workout Course Connect to the RENPHO Health app via Bluetooth, you can control speed levels through the app and access professional video classes featuring visual guides designed for specific muscle groups, improving warm-ups and facilitating post-workout recovery. Powerful Percussion Massage Gun - Equipped with a high-torque brushless motor, which lasts longer and provides a deeper massage experience. And the deep tissue massage gun can provide a massage intensity of up to 45 pounds to relieve your tense muscles. Fast Charging: Charge the muscle massage gun using the provided USB-C charging cable. Fully charge the massager before using it for the first time.