SR5101 used dog training collar(CE,RoHS,FCC Approval ): Description: 1. With different designs and colors available. 2. Different flashing modes. 3. With designs or LED Dots lighting. 4. Different sizes for your choice. 5. Popular for pets especially for dogs. 6. Standard package or customised. 7. High brightness and quality. 8. Competitive in price and short delivery time.