USB Sheath Heater with LCD Screen 40°C — Prew

A sheath warmer in the shape of a tapered body to be placed on a base, which preheats the inside of your masturbator to 40°C in less than five minutes. You slide the body into the sheath before use, plug in the USB cable, and the target temperature is displayed live on the base's LCD screen. When ready, the tunnel is at body temperature — no more cold sensations that break the excitement from the first entry.

40°C reached in less than five minutes

the body gradually heats up to 40°C, the exact range that reproduces the warmth of a human body. The bluish LCD screen displays the value in real-time, you can see the rise from room temperature. No need to wait: you can start your foreplay next to it while the system heats the sheath.

Compatible with all 15 cm insertable sheaths and more

Total length 20 cm, insertable part 15 cm — enough for Fleshlight, Kiiroo, Tenga, Jamyjob sheaths and most tunnel masturbators on the market. You insert the entire body into the masturbator's channel before the session, the heat diffuses from the inside and warms the silicone or skin-like soft material of the sheath.

LCD screen, automatic shut-off, stable base

The non-slip base mats keep the device upright even when placed on the edge of the sink. The system automatically cuts off at the target temperature to prevent overheating — zero risk of damaging the sheath by leaving it powered on. A single power button, no complicated manipulation.

USB, splash resistant

Powered by standard USB cable — plug into phone charger, PC, external battery. Resistant to water splashes (not immersion) to handle lube drops stress-free during handling. Clean with a damp cloth after use if necessary.