Features: 1. High performance speaker and stable transmission ensure clear communication. 2. Built-in 1500mAh Lithium Ion Battery, work time up to 12 hours. 3. Mini and exquisite. Easy to carry: Such a mini body make it easy to hold by hand,hang in the chest,put into pocket or worn on the shoulder. 4. Portable and lightweight, easy and convenient to use. 5. With alarm function and built-in LED flashlight. Specification: Package Size: about 17*5*5.2cm/6.69*1.97*2.05inch General Frequency Range UHF: 400-470MHz Channel No. 20 Frequency Stability ±2.5ppm Step Frequency 12.5 / 25Kz Antenna Impedance 50Ω Operating Voltage DC 3.7V Work Temperature -20C to +60C Battery Capacity H-1500mAH (Li-ion battery) Battery Life About 12 Hours Dimension W x H x D 108 x 55 x 21 mm including antenna Weight 99g Transmitter Output power 0.5W / 1W Modulation Mode 16k F3E / 11k F3E Maximum deviation ≤ 5kHz(Wide) / ≤ 2.5kHz(Narrow) Spurious Radiation ≤ 7.5μW Adjacent Ch. power ≤-65dB(Wide) / ≤-60dB(Narrow) Audio Distortion < 5% SNR ≥ -45dB / ≥ -40dB CTCSS/DCS Frequency deviation (W/N Band) 0.7±0.1kHz(Wide) / 0.4±0.1kHz(Narrow) Intermediation sensitivity 8-12mV Transmitting Current ≤ 1000mA Receiver Sensitivity < 0.25μ V (12dB SINAD) Audio Power 1W Inter modulation Interference Resistance ≥ 65dB (W) , ≥ 60dB (N) Adjacent channel Selectivity (W/N Band) ≥ 65dB (W) , ≥ 55dB (N) Audio Distortion 5% Receiving current ≤ 380 mA Package List: 1 * Instruction Manual 1 * Walkie Talkie 1 * Battery 1 * Lanyard 1 * Headphone 1 * Adapter 1 * Clip 1 * USB Charging Cable . Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.