All of the Nautical Radio Room Clock cases are made of brass and high quality alloy, polished by hand carefully, and coated with ultra-hard and corrosion resistance plating, The finish is maintenance-free and will never tarnishfor a long time.
When exposed in marine environment, The color or luster optional from: polished brass, chrome and stainless steel.
Style: 4 styles of dial optional
C1: 12 hour Arabic numberals dial with smaller hour numberals from 13 to 00 to read GMT directly.
C2: 12 hour Roman numberalsl dial.
C2A: 12 hour Roman numberals dial with dailing decor, available on GL180, 195, 198.
C3: 12 hour signal flag numberals dial.
C4: 24 hour Arabic numberals dial.
C5: 12 hour Arabic numberals dial with red two-3 minute silent periods, the gree two 3-Minute silent Periods and second marks which is red around the outside edge of the dial.
TT: 12 hour Arabic numberals dial with tide inditation.
Case: 7 kinds of case model available: GL120, GL122, GL150, GL152, GL180, GL195, GL198
Movement: Youngtown 12888 12 hour format quartz clock movement with CE certificatte.
Waterproof: GL152-CW, GL198-CW waterproof available:
Warranty: Movement: 5 year warranty: Lifetime servicing. Finish of case: 10 year warranty: Lifetime servicing.
Tcehnical Specifications of Yountown 12888 Quartz clock Movement
| Operation Voltage | 1.3V-1.7V |
| Time Keeping Accuracy | '+/- 30sec /Month At 1.5V DC.25C |
| Current Consumption | Less Than 150u At 1.5V DC |
| Torque At Second Hand | 0.6 (gr-cm) |
| Torque At Minute Hand | Less Than 36 (gr-cm) |
| Operating Temperature Range | -10C-60C |
| Battery Life | Approx.One Year (UM-3) |
| Time Indication | 12-Hour Indication By 3 Hands (Analogue) |
| Time Indication (C4:24 hours) | 24-Hour Indication By 3 Hands (Analogue) |
Nautical Radio Room Clock Model size

Model: GL 120-C5 Dial: 3-1/5"(81mm) Base: 4-3/4"(120mm) Depth: 2-1/8"(55mm) Weight: 320g | 
Model: GL 122-C5 Dial: 3-1/5"(81mm) Base: 4-3/4"(120mm) Depth: 1-1/2"(36mm) Weight: 220g |

Model: GL 150-C5 Dial: 4"(102mm) Base: 6"(150mm) Depth: 3-1/8"(78mm) Weight: 540g | 
Model: GL 152-C5 Dial: 3-3/4"(95mm) Base: 6"(150mm) Depth: 2-3/8"(60mm) Weight: 400g |

Model: GL 195-C4 Dial: 5"(124mm) Base: 7"(180mm) Depth: 2-1/2"(62mm) Weight: 900g | 
Model: GL 198-C4 Dial: 5"(124mm) Base: 7"(180mm) Depth: 1-3/4"(45mm) Weight: 435g |

Model: GL 180-C5 Dial: 5"(124mm) Base: 7"(180mm) Depth: 3-3/4"(95mm) Weight: 1020g | |