A launcher that fires a 2-meter conductive mesh net that wraps around the target and delivers a sustained electrical discharge through its entire surface area. The Jellyfish combines physical restraint with electrical incapacitation — the target is simultaneously immobilized by the weighted net and subjected to a full-body shock that prevents any coordinated muscle movement to escape. The net's conductive fibers are woven with shape-memory alloy that contracts upon deployment, tightening around the target and increasing electrical contact area.

Lazarus designed the NB-4 for live capture operations where the target must be taken intact — corporate espionage extraction, witness retrieval, and bounty collection. The Jellyfish is the preferred tool for operatives who need their target alive, conscious, and unable to resist. The net's shape-memory contraction means that struggling makes the restraint tighter and the electrical contact more complete, creating a negative feedback loop that punishes resistance until the target stops moving.

The weapon's most disturbing characteristic is its duration. The net's integrated battery sustains the electrical discharge for up to three minutes — far longer than necessary for incapacitation. Lazarus claims the extended duration is a safety feature that ensures the target remains incapacitated during operator approach. Critics note that three minutes of full-body electrical discharge causes lasting nerve damage and psychological trauma that serves no legitimate operational purpose.