Specification: Item Type: RC Transmitter Receiver Material: Plastic, Electronic Components Color: Black Number of Channels: 3 Channels Suitable Model: Vehicle and Boat Data Resolution: 1024GB Radio Frequency Power: Less Than 20dbm Modulation Mode: GFSK Low Voltage Alarm: when It is Less Than 4.4V, the Green Light Flashes Slowly. Power Supply: 6V 1.5AAx4 (Shipped Without Battery) Remote Control External Size: Approx. 160x100x200mm / 6.30x3.94x7.87in Distance: 150m/492.1ft With Gyroscope or Not: Without Gyroscope. RX-G3: Number of Channels: 3 Channels Suitable Model: Vehicle and Boat Modulation Mode: GFSK Data Resolution: 1024GB Power Supply: 4.8V-7.4V Receiver Size: Approx. 35x20x14mm / 1.38x0.79x0.55in Package List: 1 x Remote Control 1 x Receiver 1 x Manual Note: 1. Due to manual measurement, please allow 1‑3mm/0.041‑0.12in error. Thank you very much! betweendiv>2. The monitor is not calibrated consistently, and the color of the item shown in the photo may be slightly different from the actual object.between/div>