For sale: Hearing amplification devices for the hearing impaired. New Quantity: around 25 units Some are battery-powered, and others are rechargeable. Specifications: Two devices of the same category, model VHP-220 / BHA-220 from Jiatas, with differences in operation. First, the rechargeable version 🔋 This one has a built-in rechargeable battery. Specifications: Digital amplifier Charging via cable (likely USB) Long battery life after charging (approximately 8 to 20 hours depending on usage) Simple noise cancellation One easy-to-use control button Lightweight, about 8 grams Fits the right or left ear Clear and stable sound New digital chip for sound enhancement No need to change batteries Advantages: Cost-effective in the long run Convenient, no need to worry about batteries ⸻ Second, the battery version 🔘 Operates with small batteries (usually button cells like A10 or AG3 depending on the version). Specifications: Same digital amplification system Clear sound with simple noise reduction Manual volume control Operates with a replaceable battery Lightweight and small Same in-ear design Advantages: Works immediately without waiting for charging Suitable if you don't have electricity or are traveling.