Build frequency generator

Job ID: 37601112

Budget: ₹1,500 – ₹12,500 INR

I need someone talented in small electronics. I need an Arduino size or at least a handheld size so it can be used 24 hours a day. It will consist of a controller for the intensity amplitude and frequency, pulse width, 2 channels, with a rectangular symmetrical wave pattern. The specs are as follows. Again I just need someone to build this device or tell me the parts to buy to build the device myself. You can either build yourself or submit the schematics along with exact parts list and ill build it myself. Here are the parameters.

Second build is rectangular symmetrical waveform with (125ms ) between phases with the waveform of the system pulse being biphasic
Pulse width=250us
Amplitude 0 to 5.0ma 120x60x25 mm size 11grams
This includes an intensity controller handheld
3 triple A batteries in series max 4.5volts-24 hours of use

Important- I’d like the smallest device possible. Based off of a unit in production called the sparrow accent. I’m not duplicating this because my device will be able to have the parameters changed by me the user. one unit with the ability to send frequency to two separate leads that connect to points on the ear. Needs 4 electrodes with 2 electrodes (one send signal and one receives.) per frequency out of sync. (the frequency and intensity controls can be in one device with 2 separate channels to output two separate low frequencies consecutively or not in sync.)

Impedance-500 to 19,000 ohms

Also it’s a 5minute on with 10 seconds off duty cycle.
This will be an auricular acupuncture or transcutaneous electrical stimulator. You can likely find the type of wave generators in the rife community