MICRO USB waterproof connector material characteristics description:
1. Material:
1-1. Terminal: C5191-EH, T = 0.15 mm; Nickel bottom 50u "MIN.
Gold-Plated * U "MIN.welded area gold-plated ** U" MIN.
Section 1-2. D Type B steel shell: SUS201-1 / 2H, T = 0.30 mm;
The surface is plated with solvable nickel 50u "MIN.
1-3. Molding: LCP; UL94V-0; Color: Black.
2. Electrical characteristics:
2-1. Contact impedance: 30mΩ MAX.
2-2. Insulation impedance: 100M Ω MIN.
2-3. Voltage resistance: 100V AC FOR 1 MINUTE.
3. Mechanical characteristics:
3-1. Insert force: 35N Max.
3-2. Pull out force: 10 N Min.
4. Durable: 5,000 times

The smart children's watch has built-in requirements for MCRO USB 5pin waterproof base and SIM card to achieve two-way call function. It is naturally very good in terms of waterproof performance. Through our tests, its waterproof performance can meet the requirements of daily contact with children. At the same time, children's watches also perform well in terms of call and positioning. The positioning is relatively accurate. The voice of voice calls is also very clear. The simple operation method also makes children very easy to master and is very suitable for young children. In terms of endurance, standby time can reach 4-5 days, and normal use can also be maintained for more than two days.

Waterproof IP67 level references are as follows:
The most core indicator protection level-IP XX(English Ingress project level)
Refer to the national standard "Shell Protection Level GB4208-2008" and apply IEC standard 60529:2001
For example, the waterproof grade of lanjade in the three states is IP66
The first number represents the dust level, described from the 1-6, 6 national standards as dust-no dust is allowed to enter, that is, full dust-the highest dust level.
The second figure represents the waterproof level. From the 1-8, 6 national standards, it is described as anti-violent water spraying-strong water spraying in all directions has no harmful effect, that is, it adapts to most of the industrial operation scenes except for explosion-proof applications.