1. Upper & Lower Dual Adapters. It is a convenient expansion adapter with two forms switchable adapter on bottom and foldable 2-prong adapter on back. 2. Upper adapter is apply to Sunnylife XD742 chest band, ZJ666 backpack clip, ZJ554 neck mount, etc. 3. Bottom adapter is apply to Sunnylife ZJ585 sun visor mount, Q9415 car suction cup, Q9266 bicycle mount, etc. 4. 1/4in screw hole for connecting Q9404 tripod and extension rod etc. 5. Used with Sunnylife DZ753 Metal Magnetic Base. It becomes a convenient magnetic mount for POCKET 3. 6. Material: Plastic 7. Net weight: 28g
