RETEVIS RT29 400-480MHz Interphone 10W Walky Talky Handheld Transceiver •High power up to 10W,longer communication distance •Built-in 3200mAh polymer lithium-ion battery,260 hours long standby time •Under the condition that the urban area is generally not dense and is not interfered by other wireless signals,the communication distance can reach 2-5 kilometers,and the suburban buildings are sparse and open up to 10 kilometers Specification: •Frequency range: 400-480MHz •Channel number: 16 •Output power: 10W •Working voltage: 7.4V DC •Battery capacity: 3200mAh (Li-ion) •Size (with battery,without antenna): 151x58x38mm (5.9x2.3x1.5in) •Weight (with battery and antenna): 335g (11.8oz) •Audio distortion: under 5% •Frequency stability: ±2.5ppm •Max frequency deviation: ≤2.5KHz •Spurious emission: ≤7uW •Modulation mode: 11KΦF3E •Reference sensibility: ≤0.3uV •Squelch on sensibility: ≤0.25uV •Adjacent channel selectivity: ≥65dB •Spurious response: ≥55dB •International: ≥60dB •Current: ≤1.5A Package included: •1 x Interphone •1 x Hanging Strap •1 x Battery •1 x English User Manual •1 x Antenna •1 x US Adapter •2 x Accessories •Other things not included