Mechanical Stopwatch Model: 504 Introduction The Brand “DIAMOND” mechanical stopwatch Model 504 whichpowered by a mainspring, idea watch for measuring short or medium intervals, isa handheld timepiece designed to measure the amount of time elapsed from a particular time when it is activated to the time when the piece is deactivated. It is for general purpose timing to sophisticated industrial timing. The stopwatch not only allows you to anticipate time, but do not require batteries. It is often used to measure the amount of time in the laboratory experiment in the fields of scientific research, education, sports, healthcare, industrial& mining production and national defense as well as for awards, ceremonies as a gift. Features& spec. ★13 jewels
★Start/stop/reset push button by crown, no pause button
★Long hand 30 sec per turn, 1/10 sec increments
★15 minute short hand, 6 hours minimum of sequential running
★The mainspring of stainless steel, the balance wheel of special alloy
★The hairspring of nickel-based alloy and anchor escapement
★Rugged steel case;Moisture resistant
★Normal work temperature: -10℃～+40℃
★Size: ￠50x70x16mm, net weight: 120gm Maintenance -It is unsuitable to wind the mainspring too tightly to avoid breaking
-Avoid the surrounding of moistness and corrosiveness when being used
-Away from shock, magnet, strong sunshine and rain.
-Please don’t open the stopwatch rear cover to avoid dust and dampness
-Regular check-up and add oil if necessary.
-Give a FIRM press to start the stopwatch. The top button should make a 'click' when fully pressed
-1 year warranty
4. Packing
-Each piece in one bandbox with size 100x80x25mm and weight 140gm.
-Each box includes 1 pc stopwatch, manual and quality certificate.
-50 pcs in one carton with size 43x26x18cm and weight 9KG.
