Epson SOLAR Series Leitfaden

Watch Movement Specification and Drawing

SOLAR SERIES

Cal. VS76A

Movement Size

Casing Diameter

Height

Running Time

12’’’

27.0mm

4.40mm

Approx. 6 months

Date: 24/Sep./'19

Cal. VS76A

Items Rev. Page

Features 01 1

Specifications 02 2

Appearance 02 3

Casing 01 4

Hand fitting 02 5

Hand setting stem 01 6

Dial 01 7

Solar cell unit 01 8

Attention-01 02 9-01

Attention-02 02 9-02

Attention-03 01 9-03

Operation-01 01 10-01

Operation-02 01 10-02

Date :

1.Solar-powered watch

2. Eliminating the need for battery replacement

3. You can use the dial which light transmittance is more than 30%

It is possible to assemble the dial which transmits light on the solar cell.

It enabled to cover the solar cell color, and you can design variety colors of dials.

4. Running time

Expected running time from full charge to stoppage will be around 6 months.

5. Power depletion warning function

The two-second intervals movement of the second hand is a signal of energy depletion.

The watch continuous running time after two-second intervals movement is approximately 1 week.

6. Over charge prevent function is equipped

7. Structure of the separated parts

If the secondary battery is charged more than predetermined voltage, over charge prevent function is

operated to prevent the secondary battery deterioration and breakage.

This watch is a solar-powered watch containing a solar cell underneath the dial to convert any form of

light into '' electrical energy'' and store the power in a secondary battery.

Cal. VS76A Features 24/Apr./'15

Rev. : 01

Unlike conventional quartz watches, this watch does not use a silver oxide battery, thus eliminating the

need for battery replacement.

Solar cell unit

Solar cell lead terminal

Movement

Hand setting stem

Solar cell

Dial support ring

Secondary battery unit

Untransparent plate

P. 1

Date :

1. MOVEMENT DIMENSIONS

Outside diameter φ27.60mm(12H-6H) ×24.00mm(3H-9H)

Casing diameter φ27.00mm(12H-6H)

Total height 4.4mm

2. TIME STANDARD

Type of quartz oscillator Tuning fork

Frequency of quartz oscillator 32,768 Hz

Accuracy ±20 seconds per month (on wrist)

Operating temperature range −5℃to ＋50℃

Regulation device Nil (Pre-adjusted)

3. INDICATOR / FUNCTIONS

3 Hands Hour / Minute / Second chronograph (Center)

Small hands Minute chronograph (6H) / Small second (9H)

1/20 second chronograph (12H)

Calendar Instant setting device for date calendar

Reset switch

Power depletion warning function (BLD)

(Second hand moves at 2-second intervals when voltage is 1.2V)

Chronograph

Running time Approx. 6 months (After fully charged)

4. FEATURES

Jewels 0 Jewels

Anti-magnetism Over 1600A/m (Direct current magnetic field)

Driving current consumption Approx. 0.65μA (1.35V , Chronograph non-operates)

Operation stopping voltage 1.0V

Solar cell type Amorphous silicon solar cell

Maximum unbalance of hands Small second hand : 0.03μN・m

Minute chronograph hand : 0.03μN・m

1/20 second chronograph hand : 0.03μN・m

Second chronograph hand : 0.06μN・m

Minute hand : 0.70μN・m

Moment of inertia Second chronograph hand : less than 0.12μg・m²

5. SECONDARY BATTERY

Type Titanium-lithium-ion secondary battery

Size φ9.5 ×t 2.05 mm

Capacity 5mAh

Nominal voltage 1.5V

6. SEPARATED PARTS (Parts code)

Hand setting stem

0351587

Secondary battery unit

302334T

Solar cell unit

4020551

Solar cell lead terminal (2 pcs)

4281516

Untransparent plate 4453500

7. TEST OF ACCURACY

Equipment to be used SEIKO quartz tester QT-99

Greiner quartz timer-C , Witschi Q-tester 4000

Duration of measurement 10 seconds

Microphone to be used Electromagnetic detection type

All specifications are subject to change without notice.

Solar Analog Quartz 12''' Center Second Chronograph Movement

Cal.

Rev. : 02

1/Sep./'15

VS76A Specifications

The chronograph can measure up to 60 minutes in 1/20 second

increments.

P. 2

Andere Handbücher für SOLAR Series

Dieses Handbuch passt für folgende Modelle

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