Hamlet HBTGPS20 Bluetooth GPS receiver with SiRF III. Form factor: Handheld, Acquisition times - cold: 41 s, Acquisition times - warm: 37 s. Bluetooth version: 2.0+EDR. Width: 45 mm, Depth: 86 mm, Height: 23 mm. Battery technology: Lithium-Ion (Li-Ion), Battery life (max): 12 h. Operating temperature range (T-T): -10 - 70 °C, Storage temperature range (T-T): -40 - 85 °C, Operating relative humidity range: 5 - 95 %