Wireless Communication Technology: RF, Special Feature: volume-control, Included Components: RS 195 Wireless Over-Ear Headphone System with Selective Hearing Boost, Age Range (Description): Adult, Specific Uses For Product: Music, Headphones Jack: 3.5 mm Jack, Charging Time: 18 Hours, Ear Placement: Over Ear, Compatible Devices: Television, Theme: TV Series, Impedance: 24 Ohm, Control Type: Noise Control, Cable Feature: Without Cable, Item Weight: 3.5 Pounds, Frequency Response: 22000 Hz, Water Resistance Level: Not Water Resistant, Frequency Range: 17 Hz - 22 kHz, Package Type: Standard Packaging, Unit Count: 1.00 Count, Style: RS 195 Wireless Headphones, Number of Items: 1, Battery Life: 18 Hours, Is Autographed: No, Is Electric: Yes, Manufacturer: Sennheiser, Product Dimensions: 9.3 x 5.9 x 11.6 inches, Item Weight: 3.5 pounds, ASIN: B00SJ4INFI, Country of Origin: China, Item model number: RS 195, Batteries: 1 Lithium Polymer batteries required. (included), Customer Reviews: 4.2 , Best Sellers Rank: #12,870 in Electronics (See Top 100 in Electronics), Is Discontinued By Manufacturer: No, Date First Available: January 21, 2015