Feature 1 3.5inch high definition LCD screen, 420TVL shows 480X234 resolution. 2 Builtin lithium battery, charging can be used, reduce the trouble of changing the battery. Digital RF modulation with frequency hopping (automatically switched RF channels). 3 Dynamically select clear channels to avoid interference from other 2.4ghz devices.Data protection (support for user ID identification). 4 Hypnotic music playback function; Temperature display function; Twoway intercom, support data encryption. 5 Night vision function (effective range: 5 m). Both the receiver and camera have builtin microphones and speakers Open space transmission range up to 300M(990ft).Condition: 100% Brand NewItem Type: Baby MonitorModel: ZN-YE-JK-850M Receiver Battery Type: Lithium batteryReceiver Battery Capacity: 950mAh Package List2 x Plug 1 x Camera 1 x Receiver 1 x Manual