OGYA U8-T Bluetooth 4.0 Smart Watch Phone for Smartphones IOS Android Apple iphone 5/5C/5S/6/6 Puls Android Samsung S3/S4/S5 Note 2/Note 3 Note 4 HTC Sony (With Free Necklace) Android APP download link of U8 Smart Watch: https://www.dropbox.com/sh/c6wvnvophmmqcmt/AAC_P5_2lyG7rinN8_dOr2QTa?dl=0 NOTE 1: All functions are compatible with andriod smartphones, such as Samsung S3/S4/S5/Note 4/Note 5, HTC, Sony and so on NOTE 2: Most of functions are compatible with iPhone 4/4S/5/5S/6/8 Plus, EXCEPT FOR 'Messages', 'BT notice' and 'BT camera' Capacitive Touch Screen TFT LCD, EDR Time / Date / Week / Battery state display. Silicone material provides a smooth touch feeling NOTE 3: You could email us that which necklace you want, OR we will ship it random.