Avantree Audition - Bluetooth Over-Ear Headphones with Long-Lasting Durable Build, Built-in Mic, 40h Battery Life and Wireless or Wired Modes for Phone, PC & Laptop Description Features: YOUR EARS WILL THANK YOU: Featuring AptX Hi-Fi technology, our industry leading headset allows you to experience crystal clear sound-with minimal delays. Enjoy a full range of rich bass, clear treble and even midtones blended perfectly to enhance your listening pleasure. LONG LASTING BATTERY: Stream away with our built in battery that lasts up to 40 hours of playtime! With our dual mode feature, you can also easily switch to a wired connection to preserve your device's battery life. Please be aware that the built-in mic anc control buttons ony work when in wireless mode. COMFORTABLE & CONVENIENT: Designed with you in mind, our over the ear headphones feature ultra light, super soft protein earpads & an adjustable headband suitable for all day wear. DUAL LINK: Avantree Audition over ear headphones allow you to connect two phones simultaneously to ensure nobody misses an important call! WIRELESS TO WIRED...EASILY: Use your headphones via Bluetooth connection and enjoy log lasting playtime. To continue your listening experience and not kill the battery on your device, use the included 3.5mm cable to switch to a wired connection. To use with devices that are not Bluetooth-enabled, pair with Avantree Audikast or Priva III transmitter to connect and still enjoy a lag-free streaming experience. Product Details: Brand: Avantree Model Name: Audition Color: Black, Red Form Factor: Over Ear Connectivity Technology: Wireless Product Dimensions: 3.15 x 6.7 x 7.09 inches Item Weight: 0.109 ounces Item model number: BTHS-AS9-BLK Batteries: 1 Lithium Metal batteries required. (included) Is Discontinued By Manufacturer: No Date First Available: May 1, 2014 Manufacturer: Avantree Language: Chinese Country of Origin: China Item Weight: 3.1 Grams Units: 1.0 Count Number Of Items: 1