Identify the electronic function first
Vibration and E-stim are different functions. Compare the exact feature list for the chosen version rather than transferring mode counts from another product or a similar-looking remote. If a function is essential to your purchase, resolve contradictory specifications before relying on it.
Power and cleaning limits are part of the choice
Charging time, standby time and active usage time measure different things. Operating time depends on settings and conditions. An IPX6 rating does not permit immersion, and water resistance should not be extended to a charger or accessory without its own instructions.
Keep release independent of stimulation settings
Know how to stop the electronic function and how to remove the cage; those may be separate procedures. Follow the manufacturer’s restrictions and instructions, keep control and removal access available, and stop for pain or unusual discomfort. Do not use a timer or remote connection as a reason to delay needed removal.
Compare these configurations

ThrillCage is useful for distinguishing app-controlled functions from unlocking. The app manages vibration and E-stim, but the cage opens with a physical key. Two keys are included. Remote keyholding through an optional KeyPod adds a separate accessory; it does not convert the cage itself into an electronic-release lock.
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Bee Sting lists app-controlled E-stim and remote unlocking, with ABS and silicone construction and 40, 45 and 50 mm rings. Its published weight is 119 g. Compare those functions alongside current app requirements, battery conditions and the supported release procedure rather than relying on an unrestricted remote-control claim.
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The Lockink Retractable cage combines vibration and E-stim with a separate remote control. Its package lists one cage, three rings and one controller, and its published weight is 107 g. Electronic-function control and the cage’s release procedure are separate questions, so check both when comparing this configuration.
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For keyholding rather than a complete cage, the QIUI KeyPod is a separate accessory. Verify the chosen cage’s release method before comparing key storage with electronic cage functions.