How about the Pnell children s watch, is the quality good

How about Punell children's watches, no matter which brand it is, you need to grasp the following points before purchasing.

1. Battery life.

Needless to say, the current children's smart watches on the market are basically out of power in less than a day, charging is cumbersome, and it has been criticized, and power is the basis for the realization of all functions.

2. Positioning accuracy.

The positioning accuracy depends on how many times it is positioned, what is double positioning, triple positioning and the like, and the error can basically reach hundreds of meters and sometimes thousands of meters when the signal is not good. The relatively accurate positioning technology of children's smart watch products on the market is based on GPS, WiFi, base station, and gravity induction.

Indoors, wifi positioning (no need to connect to wifi, just read the location of wifi and transmit it to the receiver) is the most accurate and easy to achieve at present, avoiding the problem of weakening the signal into the room and affecting the positioning. The outdoor signal is strong and relatively good, but it also needs to be combined with the base station and GPS gravity induction, etc., in order to basically reach the error within the range of 10-20 meters advertised by the business.

3. Whether the call function is two-way.

Calls, the calls advertised on the market now, in fact, are similar to WeChat's voice intercom, not a call in the real sense, I feel that the intercom is very chicken, children are easy to ignore, can really talk on mobile phones and watches, watch watch calls are also very few, when purchasing, you must ask clearly, whether it is a real call.

In addition to the above three main points, other small functions such as one-button SOS and skin-friendly design are not technically difficult and costly, which are basically the standard configuration of all watches.

It can't be said to be garbage, but it's really not good Local**599 transaction**399 Positioning always fails Positioning is not accurate, let's not say that I bought a week and only succeeded three times The positioning has been prompting network congestion There is also feedback on the app As soon as the feedback app is submitted, the app flashes back and does not let people feedback But it is okay to play ** The sound is clear It is recommended that you want to locate accurately or buy a big name is reliable But if you only play ** This can.

More than 300 bought one, which is electronic waste, plugged in the card, no signal, pure garbage.

The watch I bought a few years ago is now completely unusable, and the manufacturer said that the software was originally a third-party cooperation, and now it is not cooperative, so even if the watch is good, it can't be used because of software problems, garbage.

Both watches are ok.

The production and production of watches are based on a simple and witty invention, which is the "spring", which can tighten and store energy, and can slowly release the energy to push the running mechanism and hands in the watch to achieve the function of displaying the time, this spring mechanism in the watch is called the mainspring. Watch ConstructionA watch consists of a watch head, a strap (buckle). The parts of the header include:

Movement, case, case back, mirror, literal (often said dial), hands, handle (adjust the time, also called press), order (some watch requirements).

The principle of the watch is that the watch is a precision instrument used to indicate the time, and the principle of the instrument is to use a vibration system with a constant cycle and continuous vibration as a standard. If you know the time it takes for the vibration system to complete the full vibration of a watch (vibration period) and calculate the number of vibrations, then the time elapsed after so many vibrations is equal to the vibration period multiplied by the number of vibrations. i.e. time = vibration period and number of vibrations.

The balance spring mechanical watch adopts the balance spring as the vibration system, the balance wheel 1 is fixed on the balance shaft 2, and the upper and lower journals of the balance shaft ** are in the bearing, which can rotate around the bearing. One end of the hairspring part 3 is fixed on the pendulum shaft, and the other end is fixed on the splint. Due to the elastic deformation of the hairspring, the movement of the balance wheel changes from rotation to reciprocating motion.

When the balance spring system oscillates, it is affected by the friction of the bearing, the air resistance, and the internal friction of the hairspring, and the amplitude (amplitude) of the oscillation will gradually decay until it stops. In order for it to continue to vibrate without attenuation, the balance spring system must be replenished regularly, i.e. there must be an energy source in the watch. The periodic replenishment of energy to the vibrating system is achieved by means of a special mechanism, the escapement.

The escapement is also used to calculate the number of oscillations of the balance spring system. Therefore, the balance spring system and escapement are the key devices of a mechanical watch.