Massage Back Brace with Heat for Lower Back Pain Relief, Cordless Lumbar Support

--3-in-1 Lower Back Massager: Combines back support, heating, and massage in one device, heating and massage can be performed separately or at the same time. 3 heat levels and 4 massage modes provide a customized experience, effectively relieving back muscle fatigue and soreness.\n--Ergonomic Support System: Built-in 4 removable steel bars and 3 steel springs, are orderly distributed on the compression belt and worn around the waist to provide strong all-around lumbar support.\n--Portable Design: Equipped with a 5000mAh rechargeable battery, HONGJING Heated back massager belt can be used continuously for 3-5 hours, depending on working modes. Thanks to the high-capacity battery, we can enjoy a comfortable heated massage experience anytime, anywhere, without the constraints of a power connection.\n--Easy to Operate: The power button controls the on/off switch and heating, and the M button controls the massage mode. Long press the power button to turn the machine on and off, short presu