New Factory Sealed but the top of the box has a little tear (see pictures). The pads included have an expiration date of 3/1/23 but the unit itself does not expire. Find relief from lower leg pain with this Omron Focus TENS therapy for the knee. A wearable and wireless design lets you receive treatment conveniently. Proven TENS therapy is drug-free and effective at soothing sore muscles below the knees. This Omron Focus TENS therapy for the knee uses Sweep Waveform technology to provide the benefits from both high and low frequencies. See less... TENS technology Helps relieve muscle and joint pain fast and easy. 20 levels of intensity Allow you to find the mode that is right for you. Sweep Waveform technology Get therapeutic benefits of high- and low-frequency stimulation of pulsed waves. Large band Fits 12.5" - 15" in knee circumference. Durable pad The device includes a comfortable, self-adhesive knee pad that is reusable up to 30 times and comes with a plastic holder for storage. User-friendly controls Its simple controls do not require any effort to learn how to use the device. Auto shutoff Ensures safe use. Portable design Enables you to take the device with you and use it everywhere in case your pain attacks catch you far from home. What's Included Omron Focus TENS Therapy for Knee Medium knee band Soft storage case Knee pad Pad holder AC adapter Charger Owner's manual