SI BAO JIAN brand name, it is established in 1986, also it is the best model of high-end technique, quality product and satisfactory service, and obtained the agreed good reputation of users from all over the world, and its users satisfactory ratio is highly reaching at 99 percent. SI BAOJ IAN devoted herself to the professional technique research and innovation of blood pressure monitor for a long time, and have ever supplied technique, production and manufacturing service for many international brand names.

SI BAO JIAN brainpower electronic blood pressure monitor series,SI BAOJ IAN civil interphone and baby phone monitor series which were put into Chinese market for the first time have obtained good reputation in the European and American market, and all the products have obtained international quality certification and safety standard certification.SI BAO JIAN Electronics Co., Ltd will be in accordance with the idea of quality is the first, customer is the highest, and make great efforts to supply good quality,overbalance product and service for Chinese users.

WT-557 walkie talkie detailed description:

1)  Communication Range: 5 km

2)  Voice Activation

3)  Low Battery Indicator

4)  Lighting

5)  Rechargeable

6)  38 CTCSS Sub-code: no channel jamming

7)  Auto Squelch Control: no interference with unwanted signal

8)  Roger Beep: paging your partner with single call button

9)   Auto PTT (Push to Talk): handsfree talking

10) Auto Channel Scan

11) Monitor Function

12) Power Save

13) Selectable Power Output