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Properties		Implantable		Detachable
		Extended life		Standard life		Extended life
				Without microcontroller	With microcontroller
Size		D 13mm x 3mm		13x14x3 mm	13x16x3 mm	13x14x3 mm
Weight1		1.4 g		1.6g	1.8g	1.6g
Real-time control of the stimulation pattern2		Yes		Yes	Yes	Yes
Real-time control of the intensity of stimulation		No		No	Yes	No
Ability to adjust intensity of stimulation before experiment3		No		Yes, with optional potentiometer	Yes	Yes, with    optional potentiometer
Polarity of stimulation		Monopolar or charge balanced		Monopolar or charge balanced	Monopolar or true bipolar/ biphasic	Monopolar or charge balanced
Replaceable battery		No		Yes	Yes	Yes
Time of work on one battery4		200-300 hours		40 – 60 hours	40 – 60 hours	200-300 hours
Standby time		6 months		–	–	6 months
Necessity to detach stimulator and remove battery when not in use		–		Yes	Yes	No
Location on the body		Subcutaneous		On skull using cemented connector or with harness on the body
Working distance from control unit		40 – 50 cm		4 – 5 meters	4 – 5 meters	100 cm
Ability to stimulate animals housed in numerous individual cages with one emitter		No		Yes	Yes	No
Ability to stimulate several animals housed in one cage		Yes		No	No	No
Parameters of stimulation		Pulse length: 0.1 ms min (externally controlled) Frequency: 0-5000 Hz (externally controlled)		Pulse length: 0.3-20/30* ms (externally controlled)  Frequency: 0-500 Hz (externally controlled)		Pulse length: 0.1 ms min (externally controlled) Frequency: 0-5000 Hz (externally controlled)

1 – Weight depends on the level of mechanical protection of the stimulators and may slightly differ from that stated in the table.

2 – Customized design permits entirely autonomous functions.

3 – There are two current diapasons available for the wireless electrical stimulators: 0 – 50 uA or over 50 uA, e.g. 50 – 500 uA or 50 – 1500 uA  etc.

4 – Time of work on one battery depends on the parameters of stimulation (intensity, pulse width and frequency).