1. Battery capacity: 1000 mA 2. Intercom distance: 3-5 kilometers 3. Power: 0.5W 4. Material: ABS 5. Dimensions: 100 x 62 x 29 mm 6. Net weight: 0.1 kg 7. Strong penetrating power, stable transmitting power, and sensitive receiving signal 8. USB portable direct charging, supports charging by computer, mobile power, socket and other charging methods 9. With flashlight function, easy to deal with various environments 10. Full-range speakers, with loud sound quality 11. Anti-lost lanyard design, not afraid of losing