A phone case with an integrated stun system that delivers a 70,000-volt discharge through electrode contacts on the case's outer edges. The PS-X fits standard smartphone form factors and adds only 4mm of thickness to the device, passing casual inspection as a ruggedized protective case. The electrodes are concealed within the case's textured grip ridges — invisible until activated by a specific grip pattern (squeeze both sides and press the volume button simultaneously).

Umbraline designed the PS-X around the observation that the smartphone is the one object always in a person's hand during a street encounter — victims instinctively clutch their phone when threatened, making it the ideal platform for a concealed defensive tool. The case's grip-pattern activation prevents accidental discharge during normal phone use, and the electrode placement ensures the phone's screen and touchscreen functionality are unaffected.

The PS-X costs Φ160 and is available for fifteen popular smartphone models. It recharges independently from the phone via a micro-USB port on the case's bottom edge, providing thirty discharges per charge. Umbraline is a small GLMZ company that has built its entire product line around the principle of defense through everyday objects — the PS-X is their bestseller, accounting for seventy percent of revenue. The product has been copied extensively, with counterfeit versions of varying quality flooding lower-tier markets.