Yes. Some collars include both short and long metal contact points (or offer contact points in short and long sizes) so you can accommodate different coat lengths.
Recharge times vary by model but are typically about 2–2.5 hours. Run time also depends on use and model; one listing notes a rechargeable receiver can last up to three weeks depending on usage.
They’re described as offering higher-intensity static correction with multiple adjustable levels, plus supplementary warnings such as tone and vibration to help with training.
Care instructions listed are generally simple — spot clean or wipe the collar clean. Avoid full immersion unless the product explicitly states a waterproof rating.
Listings describe PetSafe receiver collars as either “waterproof” or “weather-resistant,” but they do not provide a specific waterproof rating for the PetSafe collars shown.