Feature: 1. Four Frequency Bands: Support 136‑174, 220‑270, 350‑390, 400‑480MHz four band transceiver, you can also set more convenient multi frequency transceiver. 2. Clear Display: Large color screen display, seven colors can be changed, the main screen interface can directly display the transmitted power output and battery voltage display. 3. Squelch Mode: UV wireless walkie talkie supports squelch mode with carrier wave, CTCSS, DCS, 5Tone, 2Tone, DTMF, bringing you pleasant using experience. 4. Long Range: The power output is 4W, the battery capacity is 3200 mAh, the distance between cities and towns is about 2‑4 kilometers, and the suburban high speed test is about 2‑7 kilometers. 5. 3200mAh Battery: The wireless walkie talkie uses a 3200mAh large capacity battery, with long standby time, fast charging speed and stronger battery life. Specification: Item Type: Wireless Walkie Talkie Material: ABS Frequency Range: VHF: 136-174MHz, 220-270MHz UHF: 400-480MHz, 350-390MHz Power: 4W Number of Channels: 200 Channels Channel Spacing: 25KHz (Broadband) 12.5KHz (Narrowband) Phase Lock Step: 2.5KHz, 5KHz, 6.25KHz, 10KHz, 12.5KHz, 25KHz Working Voltage: 7.4VDC±15% Squelch Method: Carrier, CTCSS, DCS, 5Tone, 2Tone, DTMF Frequency Stability: ±2.5ppm Working Temperature: -20℃-+60℃ Receive Part: Sensitivity (12dB SINAD): Broadband ≤0.25uV, Narrowband ≤0.35uV Adjacent Channel Selectivity: Broadband ≥70dB, Narrowband ≥60dB Intermodulation: Broadband ≥65dB, Narrowband ≥60dB False Signal Response: Broadband ≥70dB, Narrowband ≥70dB Audio Response: Broadband +1- -3dB(0.3-3KHz), Narrowband +1- -3dB(0.3-2.55KHz) Signal To Noise Ratio: Broadband ≥45dB, Narrowband ≥40dB Audio Distortion: ≤5% Audio Output Power: ≥1W±10% Transmitter Part: Modulation: Broadband 16KOF3E, Narrowband 11KOF3E Adjacent Channel Power: Broadband ≥70dB, Narrowband ≥60dB Signal To Noise Ratio: Broadband ≥40dB, Narrowband ≥36dB Spurious and Harmonics ≥60dB Audio Response: Broadband +1- -3dB(0.3-3KHz), Narrowband +1- -3dB(0.3-2.55KHz) Audio Distortion: ≤5% Plug Voltage: AC100-240V Battery Type: 3200mAh Lithium Battery x 1 (including) Battery Model: QB-8R. Package List: 1 x Wireless Walkie Talkie1 x Battery1 x Antenna1 x Back Clip1 x Hand Strap1 x Charging Stand2 x Screw1 x Power Adapter1 x Manual Note: Please charge according to the voltage used, using other voltages may cause fire and product damage!