1. Anti-cross frequency2. USB cable charging3. 32 channels4. Standby for up to 15 days5. Built-in 8800 mAh lithium battery6. Strong penetration, available for basement floors7. Free earphone cable and exquisite lanyard8. Built-in dark display, display channel and power9. Audio noise reduction processing, the call voice is clearer and louder, and the fidelity is higher10. 15W high power11. Working voltage: 7.4V12. Frequency stability: 2.5ppm13. Frequency range: 400-480MHz14. Theoretical communication distance: 3-15km15. Theoretical battery life: 88000h16. Size: 118x50x33mm17. Weight: 180gPacking list:Walkie talkie x 1Back clip x 1Antenna x 1Charger x 1Lanyard x 18800mAh lithium battery x 1

http://olla.gr/duomsera-outdoor-handheld-civil-waterproof-high-power-wireless-walkie-talkie-duomsera/