Pro Ears HTBT Tips 3 Pairs Per Bag Black Medium. Make sure to have clean dry and fresh ear tips for maximum performance and comfort. Pro Ears recommends changing ear tips on the HT and HTBT models every 6-12 months depending on usage. Specifications for Pro Ears HTBT Tips 3 Pairs Per Bag: Manufacturer: Pro Ears Color: Black NRR: 28 dB Battery Type: Rechargeable Quantity: 3 Pairs Features of Pro Ears HTBT Tips 3 Pairs Per Bag Pro Ears behind-the-head electronic hearing protector delivers a better fit while wearing glasses hats or for those with longer hair. It fits snug but not tight so you feel secure while avoiding nasty compression headaches. Very light weight and evenly balanced so you barely know you are wearing electronic hearing protection. The audio quality is designed for people who enjoy listening to music and need hearing protection. The 10 mm diameter speakers dual drivers and a top line Bluetooth chip all result in crisper sounding highs and deeper lows. The omnidirectional microphones provide situational awareness so you know exactly where a sound is coming from. Noise isolation and the integrated microphone help provide clearer phone calls and sound quality as well. All of this is in a very small ear because the electronics are in the controls tucked securely behind your head. Universal fit for tiny adolescents to large adults with our unique coil system headband. Pro Ears is known for with their proprietary DLSC technology. Pro Ears hybrid analog/digital system ensures your safety from loud sounds and you can enjoy more natural-sounding amplification. Package Contents: Pro Ears HTBT Tips 3 Pairs Per Bag Pro Ears PEEBHTBTTIPM: HTBT Tips 3 Pairs Per Bag Black Medium