ALD02-- Wireless Bluetooth Stereo headsetFeatures High SNR Bluetooth audio connection Bluetooth stereo headphones with built-in microphone Automatic Switch-over between calls and music Advanced DSP noise reduction technology Comfortable ear cushions and adjustable headband Low power indicater、 power status can be showed in cellphone after connected via bluetooth Strechable and fold-able headband over-ear style Soft comfortable PU leather earmuff High-fidelity stereo music and clear speech within 10 meters Grade A Li-polymer battery、 incomparable long standby Unique around the back of the head、 light weight wearing style provides all day comfort and ease of use Special own-designed retail package and manualTechnical Specifications Bluetooth name: ALD02 Correspond with: Bluetooth V3.0 + EDR wireless transmission protocol Bluetooth profile: HSP、HFP、A2DP、AVRCP Transmitting Power: Class 2 Transmission range: 10M、 360＜ SNR:92dB Frequency response:20-20KHz Speaker size:30mm Operating voltage and current: 3.7V/30mA Rechargeable:300mah Li-polymer battery 100Hz~10kHz&SRN－74dB&Sensitivity:-66dB Recording: OFF / ON (default setting) Charging time: ＋2.5h Music playing time: －8h Talking time: －9h Standby time: －230h Color:Orange-WhitePackage List 1 * Headset 1 * USB Cable 1 * User ManualSimple-to-use: control all functions of your music (volume、 sound、 song selection) and calls from your phone via our simple-to-use user interface on the headphones themselves.Welcome to shop !All orders ship fast from china directly to the worldwide.If you have any questions、 please contact us、 thanks.