Clip-on 12x Optical Zoom HD Camera Lens For

Mobile phone chargers can be roughly divided into travel chargers, cradle chargers and maintenance chargers. Generally, users mainly contact the first two. And the most sold on the market is the travel charger.
There are also various forms of travel chargers. The common ones are the cheap duck egg-shaped miniature travel charger, the ordinary desktop card board charger, and the high-end desktop charger with crystal display. Mobile phone charger, also known as: mobile phone adapter, is actually composed of a stable power supply (mainly regulated power supply, providing stable working voltage and sufficient current) plus necessary control circuits such as constant current, voltage limiting, and time limiting. The output parameters marked on the charger (referring to the line charger): such as output 5.0V/1A, output 5.0V/1500mA-11200... refers to the relevant parameters of the internal regulated power supply. Understand this truth, you will know that a (good quality) mobile phone charger is easy to change into a good quality regulated power supply.
The chargers of lithium-ion (li-ion) batteries commonly used in mobile phones use a constant-current and voltage-limited charging system, and the charging current is generally around C2—that is, the charging rate is two hours. For example, a 500mAh is charged at 250mA in about two hours 4. Constant voltage charging after 2V.
The lion is not suitable for the -DV/DT detection fast charging method used by the NIMH advanced fast charger, because the lion has a strict limit on the charging current. Lithium ion (Li+) is very active, and high current charging is prone to danger. The general user contacts are mainly the first two. The most popular travel chargers on the market are travel chargers. There are also various forms of travel chargers. The common ones include cheap duck-egg miniature travel chargers, ordinary desktop card board chargers, and high-end desktop chargers with LCD display. device. In view of the fact that most mobile phone users are non-professional users, the chargers basically have the function of full self-stop, and most of the travel chargers are fast chargers, and the charging time is about 1-3 hours. Many chargers on the market advertise that they are controlled by microcomputers, including some very cheap duck-egg-type miniature travel chargers. In fact, strictly analyzed from the charging circuit, only a small number of chargers can be truly controlled by microcomputers (MCU control). .
Some manufacturers claim to be "microcomputer control" when they use integrated blocks on the charging circuit. In fact, many low-cost design integrated blocks are cheap op amp integrated blocks, while some dedicated charging control integrated blocks have higher unit prices. , generally used in relatively high-end or brand-name chargers. So we can't trust the so-called microcomputer control, especially the cheap products. Many products are similar in appearance but have very different internal circuits, and their performance is also very different.

Clip-on 12x Optical Zoom HD Camera Lens For Universal Mobile Phone

Feature:
(1) The has 8 times zoom, which can adjust the focal length well.
(2) The can be used as a monocular.
(3) Fit most kinds of mobile phones, include flip phones and bar phones,
(4) Phone has back camera, can be connected to the through the clip.
(5) Mobile phone's quality of imaging can be improved evidently.
(6) Applicable to watch the game, concerts, tourism, observe animal lovers, news reporter long-distance shooting etc.
(7) Private detective taking pictures forensics, geological exploration, forestry management, railway port scheduling and etc.
(8) The product includes: one telephoto lens, one clip, one cleaning cloth.

Specifications:
Item Type: Phone (flexible)
Material: Optical lens, ABS
Color:(If you buy more, you may receive the same color or multiple colors)
Size:(Approx.)
Length: 88mm/3.46in (not stretch), can stretch 15mm/0.59in
Small lens diameter: 15mm/0.59in; Large lens diameter: 21mm/0.83in (Neither including the lens border)
Actual Magnification: 12X
Objective Lens Diameter: 25mm/0.98in
Exit Pupil Distance: 2.2mm/0.09in
Exit Pupil Diameter: 11mm/0.43in
Field of View: 70 degree
Compatible with: All phone and tablet, include for iPhone Samsung Sony HTC etc.

Notes:
1. Please use it care, because lens are adjusted accurately, if it drops or hit, the field of vision maybe not matched and picture will deflect.
2. Please don't drop into water. If it drops into water, please repair it quickly.
3. Please don't look at the sun absolutely, your eyes may be ache and blind sometimes.

Package includes:
1 X Phone Telescope
1 X Clip
1 X Cleaning Cloth
No Retail Packing