They are made of durable materials and can withstand daily drops. Battery lasts around 10 to 48 hours on a single charge depending on how much you transmit. Press the button to start talking quickly and easily. The volume can be adjusted; Built-in scrambler can enhance your communication safety. Range is dependant on terrain. Max transmission up to 3km with no obstructions. 

Specifications:

Channel Capacity: 16 Channels

Frequency Stability: ±2.5ppm

Battery Type: 1500mAh Rechargeble Li-ion Battery

Operated Voltage: 3.7V DC

Antenna Impedance: 50Ω

Operating temperature: -20°c-+50°c    

Plug: 110V-240V AC Wall-wart Type A

Dimensions (with antenna): 5.5 x 1.9 inches

Weight (with battery):0.27lb

Transmitter:

Modulation Emission: 8-12mV

Spurious Emission: ≤7.5uW

Adjacent channel power: ≤-65dB ≤-60dB

SNR(W/N): ≤-45dB ≤-40dB

QT/DOT(W/N): 0.7±0.1KHz/0.4±0.1KHz

Transmitting Current: ≤1.2A

Receiver:

Sensitivity (12dB SINAD): ﹣122dBm

Intermodulation(W/N): ≥65dB/≥60dB

Adjacent Channel Selectivity: ≥65dB/≥60dB

Audio Power : 0.4W (8R Load)

Audio Distortion: ≤10%

Receiver Current: ≤380mA

Functions:

Battery Power Saving

Low Electricity Prompt

Channel Time-out Timer

Busy Channel Lock

Package includes:

2* Walkies talkies

2*1500mAh High Capability Li-ion Batteries

2* Desktop Chargers

2* Belt Clips

2* Handstrap