For small 2-way radios, Treo, iPhone, Palm, Blackberry and anything thatâ€™s around 4.5 in. height. For fit, simply measure the height of your device (excluding antenna). If itâ€™s around 4.5 in., this is the holster for you. Variations in width and thickness are accommodated by elastic retention. Comes with our heavy duty spring steel clip pre-installed for quick and secure attachment to duty/rigger's belt, pants belt, waistband, pocket seam, backpack strap, etc. Clip can be removed. Fits 2.25 in. belt loops.