For more detailed information, please check the product manual in the package box.AFTER SALE SERVICE : For a healthier life. This male home care device is warrantied for one year from the purchase date, and lifetime after-sale service support is available. If you have any questions in use, please contact us. EASY TO OPRATE : 131 independent lamp beads can offer enough power. The buttons are easy and convenient to operate, and the font is large and clear, which is very suitable for middle-aged and elderly people. WEARABLE DESIGN : This red and blue device uses a wearable design, you can wear it, portable operation, and adopts a high-definition touch screen, the text display is clear, the button operation is simple and convenient,making you more comfortable. PATENTED PRODUCT : High-energy light source simultaneously irradiates the acupuncture points of Qihai, Guanyuan, Zhongji, Qugu, Mingmen, etc, which are located on the front abdomen, back and perineum. It has a great positive effect on treating urinary frequency and urgency, so as to improve your sleeping quality. INSTRUCTIONS FOR USE : We recommend that you use our red and blue light treatment device 1 to 2 times a day, use blue light for 5 minutes,protect your health, use red light for 30 minutes, red light promotes your body function for repair and improvement, it is better to drink 200ML warm water before and after use.