Abodos Wireless Headphone Version 5.0 Comfortable to wear HD Stereo for 12 hours of listening to AUX and TF Cards Specifications: Brand : ABODOS Model : AS-WHO1 Wireless Version : V5.0 Rechargeable Lithium Battery : 500mAh Music Playing Time : 12 Hours Charge Time : 2.5 Hours Operation Distance : 10m TF Card Supported : 128MB - 32GB Support Function : Bluetooth, AUX, SD crad (TF) Frequency Range : 2.402-2.480 GHz FM Frequency Response : 87.5-108MHz Support Profiles A2DP, AVCTP, AVCTP, AVRCP, HFP, SPP, SMP, ATT, GAP, GATT, RFCOMM, SDP, L2CAP HEADPHONES outer arm/decorative piece made of aluminium have a good sound field and good comfort. Wireless Version 5.0 HD Sound Quality Noise Reduction Fully Compatible Voice Prompt The Telegraph Head-Mounted Inline Volume Control Pause/Playback Control