Application Portable GPS Devices Original Brand Arkon, Globalsat, GNS, i.Trek, OnCourse, Royaltek Chemistry Lithium Ion Voltage 3.7V Nominal Capacity 1800mAh Brand Master (this product is a compatible alternative to that of the original brand) Width 35mm Height 11mm Length/Breadth/Depth 53.3mm Weight 102g Suitable For: Arkon BT-339 Globalsat BT-318 Globalsat BT-318X Globalsat BT-335 Globalsat BT-338 Globalsat BT-339 GNS 5840 GNS 5843 I.Trek M3 OnCourse BT-339 OnCourse SiRF Star III Royaltek RBT-2010 Compatible With: Arkon LIN302 Arkon NTA2236 Globalsat LIN302 Globalsat NTA2236 GNS LIN302 GNS NTA2236 I.Trek LIN302 I.Trek NTA2236 OnCourse LIN302 OnCourse NTA2236 Royaltek LIN302 Royaltek NTA2236