AFTER SALES SERVICE: 1 Red Light Lamp, 1 Charge Cable, 1 User Manual, 1 gog-gles. We provide a 60-day money-back and 1-year after-sales service, If you have any questions, please get in touch with us. EASY TO CARRY: The portable and wireless design is perfect for traveling with your pet. Use 1-2 times a day for 4-6 weeks for 10-20 minutes each time. 3 MODES AND TIMING: Thoughtfully designed with 3 light modes (red near-infrared red near-infrared) and 10 15 20 minute automatic timing, allowing you to choose the experience that suits you. SMALL AND LIGHTWEIGHT: Handheld red light is compact, ideal for small areas, lightweight and portable, easy to use, easy to clean, and equally applicable to pets. COMBINATION REDLIGHT: It combines 16 PCS of 660nm red light and 8 PCS of 850 nm near-infrared light wavelengths to be helpful. The red light is visible, while the infrared light is not.