1. Timer: Users can set the playing time and off time. 2. Sound encryption: Seller can set the passwords to Protection the sounds will not be deleted or COPY.3. Remote control: Wireless transmission distance can reach up to 200 meters.4. Built-in speakers, and support two external speakers. Superb designed mold with Horn access slot. Can directly installed for the Horn (CP-SO1 or CP-S02) and louder voice.5. Built-in Flash, TF card supported.6. Support lithium batteries or 10 * AA batteries (optional), support external 12V power.7. USB 2.0 Transfer rate for Download8. Built-in 110 bird sounds.9. size: 120*65*30mm