Please refer to SKU 47851 - Model: SX-910A - Color: Black - Control music and calls from the headphones - Bluetooth 2.1 wireless technology - Supports Bluetooth Advanced Audio Distribution (A2DP) Hands-free (HFP) and Headset profiles - Distance: 10 m radius (straight line manufacturer rated) - Music playing time per charge: 6 hours (manufacturer rated) - Talk time per charge: 10 hours (manufacturer rated) - Standby time per charge: 135 hours (manufacturer rated) - Works with all compatible Bluetooth-enabled phones or music devices - Well designed and easy to use - Package included: - 1 * SX-910A Bluetooth headset - 1 * AC charger (100~240V US plug) - 1 * USB charging cable - 1 * English user manual