Sangean U1 Operating Instruction page 12

MIC IN socket:
6.5 mm diameter, suits for Vocal Dynamic Microphone.
Speaker unit: 6.5 inches 8 ohm 15 W , full range
Internal Antenna system:
AM built-in ferrite aerial
FM built in removable bended spring antenna
LED illuminator: 3 x white LED, current consumption 50 mA
Battery life:
Approx. 30 hours using Alkaline batteries at 50 mW output power
Dimension: 260 x 370 x 350 mm
Weight: approx. 4.2 kgs.
11